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A blood vessel carrying blood toward the heart; all the veins except the pulmonary carry dark or oxygenated blood.vena [NA]; [L. vena]
accessory cephalic v. a variable v. that passes along the radial border of the forearm to join the cephalic v. near the elbow.vena cephalica accessoria [NA];
accessory hemiazygos v. formed by the union of the fourth to seventh left posterior intercostal v.'s, passes along the side of the bodies of the fifth, sixth, and seventh thoracic vertebrae, then crosses the midline behind the aorta, esophagus, and thoracic duct, and empties into the azygos v., sometimes in common with the hemiazygos v.vena hemiazygos accessoria [NA], vena azygos minor superior;
accessory saphenous v. an occasional v. running in the thigh parallel to the great saphenous v. which it joins just before the latter empties into the femoral v.vena saphena accessoria [NA];
accessory vertebral v. a v. that accompanies the vertebral v. but passes through the foramen of the transverse process of the seventh cervical vertebra and opens independently into the brachiocephalic v.vena vertebralis accessoria [NA];
accompanying v. vena comitans
accompanying v. of hypoglossal nerve vena comitans nervi hypoglossi
anastomotic v.'s See inferior anastomotic v., superior anastomotic v.
angular v. a short v. at the medial angle of the eye, formed by the supraorbital and supratrochlear v.'s and continuing as the facial v.vena angularis [NA];
anonymous v.'s obsolete term for brachiocephalic v.'s.
anterior auricular v. one of several v.'s draining the auricle and acoustic meatus and emptying into the retromandibular v.vena auricularis anterior [NA], vena preauricularis;
anterior cardiac v.'s two or three small v.'s in the anterior wall of the right ventricle opening directly into the right atrium independently of the coronary sinus.venae cordis anteriores [NA];
anterior cardinal v.'s See cardinal v.'s.
anterior cerebral v. a small v. that parallels the anterior cerebral artery and drains into the basal v.vena cerebri anterior [NA];
anterior facial v. facial v
anterior intercostal v.'s tributaries to the musculophrenic or internal thoracic v.'s from the anterior portions of intercostal spaces.venae intercostales anteriores [NA];
anterior jugular v. it arises below the chin from v.'s draining the lower lip and mental region, descends the anterior portion of the neck superficially, and terminates in the external jugular v. at the lateral border of the scalenus anterior muscle.vena jugularis anterior [NA];
anterior labial v.'s tributaries of the femoral or external pudendal v.'s draining the mons pubis and anterior labia majora.venae labiales anteriores [NA];
anterior pontomesencephalic v. vena pontomesencephalica anterior
anterior scrotal v.'s tributaries of the femoral or exteranl pudendal v.'s drainign the anterior aspect of the scrotum and the skin and dartos fascia of the shaft and base of the penis.venae scrotales anteriores [NA];
anterior v. of septum pellucidum v. draining the anterior part of the transparent septum; it empties into the superior thalamostriate v.vena septi pellucidi anterior [NA];
anterior tibial v.'s the venae comitantes of the anterior tibial artery which empty into the popliteal v.venae tibiales anteriores [NA];
anterior vertebral v. the small v. that accompanies the ascending cervical artery; it opens below into the vertebral v.vena vertebralis anterior [NA];
appendicular v. the tributary of the ileocolic v. that accompanies the appendicular artery.vena appendicularis [NA];
aqueous v. a tributary of the anterior ciliary v. which receives aqueous humor from the sinus venosus sclerae.
arciform v.'s of kidney arcuate v.'s of kidney
arcuate v.'s of kidney v.'s that parallel the arcuate arteries, receive blood from interlobular v.'s and straight venules, and terminate in interlobar v.'s.venae arcuatae renis [NA], arciform v.'s of kidney;
arterial v. so called because it ramifies like an artery (portal v.) or because, while proceeding from the heart like an artery, it contains unoxygenated blood, like a v. (pulmonary artery).vena arteriosa;
ascending lumbar v. paired, vertical v. of the posterior abdominal wall, adjacent and parallel to the vertebral column, posterior to the origin of the psoas major muscle; it connects the common iliac, iliolumbar, and lumbar v.'s in the paravertebral line, the right v. joining the right subcostal v. to form the azygos v., the left v. uniting with the left subcostal v. to form the hemiazygos v.vena lumbalis ascendens [NA];
auricular v.'s See anterior auricular v., posterior auricular v.
axillary v. a continuation of the basilic and brachial v.'s running from the lower border of the teres major muscle to the outer border of the first rib where it becomes the subclavian v.vena axillaris [NA];
azygos v. arises from the merger of the right ascending lumbar v. with the right subcostal v. and often a communication with the inferior vena cava; ascends through the aortic hiatus of the diaphragm or its right crus; it runs along the right side of the thoracic vertebral bodies in the posterior mediastinum, and terminates by arching anteriorly over the root of the right lung to enter the posterior aspect of the superior vena cava.vena azygos [NA], azygos (2), vena azygos major;
basal v.'s See basal v. of Rosenthal, common basal v., inferior basal v., superior basal v.
basal v. of Rosenthal a large v. passing caudally and dorsally along the medial surface of the temporal lobe from which it receives tributaries; it empties into the great cerebral v. (of Galen) from the lateral side.vena basalis [NA], Rosenthal's v;
basilic v. arises from the ulnar side of the dorsal venous network of the hand; it curves around the medial side of the forearm, communicates with the cephalic v. via the median cubital v., and passes up the medial side of the arm to join the axillary v.vena basilica [NA];
basivertebral v. one of a number of v.'s in the spongy substance of the bodies of the vertebrae, emptying into the anterior internal vertebral venous plexus.vena basivertebralis [NA];
Baumgarten's v.'s nonobliterated remnants of the vena umbilicalis.
Boyd communicating perforation v.'s a v. connecting the superficial and deep venous system in the anteromedial calf.
brachial v.'s venae comitantes of the brachial artery which empty into the axillary v.venae brachiales [NA];
brachiocephalic v.'s formed by the union of the internal jugular and subclavian v.'s; other tributaries of the right brachiocephalic v. are the right vertebral and internal thoracic v.'s, and the right lymphatic duct; other tributaries of the left brachiocephalic v. are the left vertebral, internal thoracic, superior intercostal, thyroidea ima, and various anterior pericardial, bronchial, mediastinal v.'s, and the thoracic duct.venae brachiocephalicae [NA];
Breschet's v. diploic v
bronchial v.'s many v.'s running in front of and behind the bronchi and uniting into two main trunks which empty on the right side into the azygos v., on the left into the accessory hemiazygos or the left superior intercostal v.venae bronchiales [NA];
Browning's v. inferior anastomotic v
v. of bulb of penis a tributary of the internal pudendal v. that drains the bulb of the penis.vena bulbi penis [NA];
Burow's v. 1. an occasional v. passing from the inferior epigastric, sometimes receiving a tributary from the urinary bladder, which empties into the portal v.; 2. one of the renal v.'s.
capillary v. venule
cardiac v.'s See anterior cardiac v.'s, great cardiac v., middle cardiac v., venae cordis minimae, under vena.
cardinal v.'s the major systemic venous channels in adult primitive vertebrates and in the embryos of higher vertebrates; the anterior cardinal v.'s are the major drainage channels from the cephalic part of the body, and the posterior cardinal v.'s , from the caudal part; the common cardinal v.'s , formed by the anastomosis of the anterior and posterior cardinal v.'s, are the main systemic return channels to the heart; in the older literature, sometimes called Cuvier's ducts.
v.'s of caudate nucleus venae nuclei caudati, under vena
cavernous v.'s of penis the cavernous venous spaces in the erectile tissue of the penis.venae cavernosae penis [NA];
central v.'s of liver the terminal branches of the hepatic v.'s that lie centrally in the hepatic lobules and receive blood from the liver sinusoids.venae centrales hepatis [NA], Krukenberg's v.'s;
central v. of retina formed by union of the retinal v.'s and accompanies the artery of the same name in the optic nerve.vena centralis retinae [NA];
central v. of suprarenal gland the single draining v. of the gland; it receives a number of medullary v.'s; on the right side it empties directly into the inferior vena cava and on the left into the left renal v.vena centralis glandulae suprarenalis [NA];
cephalic v. arises at the radial border of the dorsal venous rete of the hand, passes upward in front of the elbow and along the lateral side of the arm; it empties into the upper part of the axillary v.vena cephalica [NA];
cerebellar v.'s the v.'s draining the cerebellum. See inferior v.'s of cerebellar hemisphere, superior v.'s of cerebellar hemisphere, petrosal v., precentral cerebellar v., inferior v. of vermis, superior v. of vermis.venae cerebelli [NA], v.'s of cerebellum;
v.'s of cerebellum cerebellar v.'s
cerebral v.'s See anterior cerebral v., deep middle cerebral v., great cerebral v., superficial middle cerebral v.
cervical v. See deep cervical v.
choroid v. See inferior choroid v., superior choroid v.
choroid v.'s of eye vortex v.'s
ciliary v.'s several small v.'s, anterior and posterior, coming from the ciliary body.venae ciliares [NA];
circumflex v.'s See deep circumflex iliac v., superficial circumflex iliac v., lateral circumflex femoral v.'s, medial circumflex femoral v.'s.
v. of cochlear aqueduct v. of cochlear canaliculus
v. of cochlear canaliculus it drains the cochlea, sacculus, and part of the utricules, and empties into the superior bulb of the jugular v. by accompanying the perilymphatic duct through the cochlear canaliculus.vena aqueductus cochleae [NA], v. of cochlear aqueduct, vena canaliculi cochleae;
Cockett communicating perforating v.'s mid-thigh perforation v.'s that connect the deep and superficial venous systems.
colic v.'s See right colic v., middle colic v., left colic v.
common basal v. the tributary to the inferior pulmonary v. (right and left) that receives blood from the superior and inferior basal v.'s.vena basalis communis [NA];
common cardinal v.'s See cardinal v.'s.
common facial v. a short vessel formed by the union of the facial v. and the retromandibular v., emptying into the jugular v.; considered to be a continuation of the facial v. in the NA.vena facialis communis;
common iliac v. formed by the union of the external and internal iliac v.'s at the brim of the pelvis and passes upward behind the internal iliac artery to the right side of the body of the fifth lumbar vertebra where it unites with its fellow of the opposite side to form the inferior vena cava; the left common iliac v. is submitted to a pulsating compression by the right common iliac artery against the vertebral column which may result in partial obstruction of the v.vena iliaca communis [NA];
companion v. vena comitans
companion v.'s venae comitantes, under vena
condylar emissary v. a v. that connects the sigmoid sinus and the external vertebral venous plexuses through the condylar canal of the occipital bone.vena emissaria condylaris [NA], emissarium condyloideum;
conjunctival v.'s the v.'s of the conjunctiva which drain primarily to the ophthalmic v.'s.venae conjunctivales [NA];
coronary v. left gastric v
v. of corpus striatum superior thalamostriate v
costoaxillary v. one of a number of anastomotic v.'s connecting the intercostal v.'s of the first to seventh intercostal spaces with the lateral thoracic or the thoracoepigastric v.
cutaneous v. superficial v
Cuvier's v.'s the common cardinal v.'s of the embryo. See cardinal v.'s.
cystic v. v.'s, usually anterior and posterior, which drain the neck of the gallbladder and cystic duct, along which they pass to enter the right branch of the portal v.; they communicate extensively with surrounding v.'s of the stomach, duodenum and pancreas.vena cystica [NA];
deep cerebral v.'s the numerous v.'s draining the deep structures of the cerebral hemispheres; they empty into the tributaries of the great cerebral v.venae cerebri profundae [NA];
deep cervical v. large v. running with the artery of the same name between the semispinalis capitis and semispinalis cervicis draining the deep muscles at the back of the neck and emptying into the brachiocephalic or the vertebral v.vena cervicalis profunda [NA];
deep circumflex iliac v. corresponds to the artery of the same name, and empties, near or in a common trunk with the inferior epigastric v., into the external iliac v.vena circumflexa iliaca profunda [NA];
deep v.'s of clitoris the v.'s that pass from the dorsum of the clitoris to join the vesical plexus.venae profundae clitoridis [NA];
deep dorsal v. of clitoris a tributary of the vesical venous plexus; it runs a course deep to the fascia on the dorsum of the clitoris.vena dorsalis clitoridis profunda [NA];
deep dorsal v. of penis a vein on the dorsum of the penis deep to the fascia of the penis; it is a tributary to the prostatic venous plexus.vena dorsalis penis profunda [NA];
deep epigastric v. inferior epigastric v
deep facial v. the communicating v. that passes from the pterygoid venous plexus of the infratemporal fossa to the facial v.; it is devoid of valves.vena faciei profunda [NA];
deep femoral v. the v. that accompanies the deep femoral artery, receiving perforating v.'s from the lateral and posterior aspects of the thigh. It joins the femoral v. in the femoral triangle, usually in common with the medial and lateral circumflex femoral v.'s.vena profunda femoris [NA];
deep lingual v. the principle v. of the tongue that accompanies the deep lingual artery and joins the lingual v. It drains the body and apex of the tongue, running posteriorly near the median plane; they are often visible through the mucosa on the underside of the tongue, to each side of the frenulum.vena profunda linguae [NA];
deep middle cerebral v. the v. that accompanies the middle cerebral artery in the depths of the lateral sulcus and empties into the basal v. of Rosenthal.vena cerebri media profunda [NA];
deep v. of penis the v. deep to the deep fascia on the dorsum of the penis. It enters the prostatic plexus by passing through a gap between the arcuate pubic ligament and the transverse perineal ligament.vena profunda penis [NA];
deep temporal v.'s v.'s corresponding to the arteries of the same name; they empty into the pterygoid venous plexus.venae temporales profundae [NA];
digital v.'s See dorsal digital v.'s of foot, palmar digital v.'s, plantar digital v.'s.
diploic v. one of the v.'s in the diploë of the cranial bones, connected with the cerebral sinuses by emissary v.'s; the main diploic v.'s are the frontal, anterior temporal, posterior temporal, and occipital.vena diploica [NA], Breschet's v., Dupuytren's canal;
dorsal callosal v. vena corporis callosi dorsalis
dorsal v.'s of clitoris See deep dorsal v. of clitoris, superficial dorsal v.'s of clitoris.
dorsal v. of corpus callosum vena corporis callosi dorsalis
dorsal digital v.'s of foot they receive intercapitular v.'s from the plantar venous arch, join to form four common dorsal digital v.'s, and terminate in the dorsal venous arch.venae digitales dorsales pedis [NA], dorsal digital v.'s of toes;
dorsal digital v.'s of toes dorsal digital v.'s of foot
dorsal lingual v. multiple tributaries of the lingual v. draining the dorsum of the tongue, becoming increasingly larger toward the root of the tongue.venae dorsales linguae [NA];
dorsal metacarpal v.'s three v.'s on the dorsum of the hand draining blood from the four medial digits into the dorsal venous network of the hand.venae metacarpeae dorsales [NA];
dorsal metatarsal v.'s v.'s arising from the dorsal digital v.'s forming the dorsal venous arch of the foot.venae metatarseae dorsales [NA];
dorsal v.'s of penis See deep dorsal v. of penis, superficial dorsal v.'s of penis.
dorsal scapular v. the vena comitans of the descending scapular artery; it is a tributary to the subclavian or the external jugular v.vena scapularis dorsalis [NA];
dorsispinal v.'s v.'s forming a plexus around the neural arches and processes of the vertebrae.
emissary v. one of the channels of communication between the venous sinuses of the dura mater and the v.'s of the diploë and the scalp. See also condylar emissary v., mastoid emissary v., occipital emissary v., parietal emissary v.vena emissaria [NA], emissarium, emissary (2);
epigastric v.'s See inferior epigastric v., superficial epigastric v., superior epigastric v.'s.
episcleral v.'s a series of small venules in the sclera close to the corneal margin that empty into the anterior ciliary v.'s.venae episclerales [NA];
esophageal v.'s series of v.'s draining the submucous venous plexus of the esophagus; proceding inferiorly from the cervical portion of the esophagus, they drain to the inferior thyroid v., the superior intercostal v.'s, the azygos, accessory hemiazygos and hemiazygos v.'s, all of which are ultimately tributaries of the superior vena cava; the most inferior esophageal v.'s, from the cardiac portion of the esophagus, drain via the esophageal branches of the left gastric v., a tributary of the portal v. Thus, the submucosal v.'s of the inferior esophagus form a portocaval anastomoses, and are subject to the formation of varicosities in portal hypertension.venae esophageae [NA];
ethmoidal v.'s v.'s that accompany the anterior and posterior ethmoidal arteries and pass into the superior ophthalmic v.; they drain the ethmoidal sinuses.venae ethmoidales [NA];
external iliac v. a direct continuation of the femoral v. superior to the inguinal ligament, uniting with the internal iliac v. to form the common iliac v.vena iliaca externa [NA];
external jugular v. superficial v. formed inferior to the parotid gland by the junction of the posterior auricular v. and the retromandibular v., and passes down the side of the neck crossing to the sternocleidomastoid muscle vertically to empty into the subclavian v.vena jugularis externa [NA];
external nasal v.'s several vessels that drain the external nose, emptying into the angular or facial v.venae nasales externae [NA];
external pudendal v.'s these correspond to the arteries of the same name; they empty into the great saphenous v. or directly into the femoral v., and receive the superficial dorsal v. of the penis (clitoris) and the anterior scrotal (or labial) v.'s.venae pudendae externae [NA];
v.'s of eyelids palpebral v.'s
facial v. a continuation of the angular v. at the medial angle of the eye; it passes diagonally downward and outward, uniting with the retromandibular v. below the border of the lower jaw before emptying into the internal jugular v.anterior facial v., vena facialis anterior, vena facialis;
femoral v. a continuation of the popliteal v., it accompanies the femoral artery through the adductor canal and into the femoral triangle where it lies with in the femoral sheath; it becomes the external iliac v. as it passes deep to inguinal ligament.vena femoralis [NA];
fibular v.'s peroneal v.'s
frontal v.'s 1. the superficial v.'s draining the frontal cortex and emptying into the superior sagittal sinus; 2. supratrochlear v.'s
v.'s of Galen 1. internal cerebral v.'s 2. See great cerebral v. See great cerebral v.
gastric v.'s See short gastric v.'s, right gastric v., left gastric v.
gastroepiploic v.'s See right gastroepiploic v., left gastroepiploic v.
gluteal v.'s See inferior gluteal v.'s, superior gluteal v.'s.
great cardiac v. begins at the apex of the heart (where it anastomoses with the middle cardiac v.), runs first with the anterior interventricular artery as it ascends the anterior interventricular groove, then turns to the left as it approaches or reaches the coronary groove to run with the circumflex branch of the left coronary artery; it merges with the oblique v. of the left atrium to form the coronary sinus.vena cordis magna [NA], left coronary v., vena cardiaca magna;
great cerebral v. great cerebral v. of Galen
great cerebral v. of Galen a large, unpaired v. formed by the junction of the two internal cerebral v.'s in the caudal part of the tela choroidea of the third ventricle; it passes caudally between the splenium of the corpus callosum and the pineal gland, curving dorsally to merge with the inferior sagittal sinus to form the straight sinus.vena cerebri magna [NA], great cerebral v., great v. of Galen;
great v. of Galen great cerebral v. of Galen
great saphenous v. formed by the union of the dorsal v. of the great toe and the dorsal venous arch of the foot, ascends in front of the medial malleolus, behind the medial condyle of the femur, and traverses the saphenois hiatus in the fascia lata to empty into the femoral v. in the upper part of the femoral triangle.vena saphena magna [NA], large saphenous v., long saphenous v;
hemiazygos v. formed by the merger of the left ascending lumbar v. with the left subcostal v. or a communication fromthe inferior vena cava, it pierces the left crus of the diaphragm, ascends along the left side of the bodies of the lower thoracic vertebrae, opposite the eighth vertebra, crosses the midline behind the aorta, thoracic duct, and esophagus, and empties into the azygos v., sometimes in common with the accessory hemiazygos v.vena hemiazygos [NA], vena azygos minor inferior;
hemorrhoidal v.'s obsolete term for rectal v.'s. See inferior rectal v.'s, middle rectal v.'s, superior rectal v.
hepatic v.'s the v.'s that drain the liver; they collect blood from the central v.'s and terminate in three large v.'s opening into the inferior vena cava below the diaphragm and several small inconstant v.'s entering the vena cava at more inferior levels.venae hepaticae [NA];
hepatic portal v. portal v
highest intercostal v. the v. draining the first intercostal space into either the vertebral or the brachiocephalic v.vena intercostalis suprema [NA], supreme intercostal v;
hypogastric v. obsolete term for internal iliac v.
ileal v.'s See jejunal and ileal v.'s.
ileocolic v. a large tributary of the superior mesenteric v. that runs parallel to the ileocolic artery and drains the terminal ileum, appendix, cecum, and the lower part of the ascending colon.vena ileocolica [NA];
iliac v.'s See common iliac v., external iliac v., internal iliac v., deep circumflex iliac v., superficial circumflex iliac v.
iliolumbar v. accompanying the artery of the same name, anastomosing with the lumbar and deep circumflex iliac v.'s, and emptying into the internal iliac v.vena iliolumbalis [NA];
inferior anastomotic v. an inconstant v. that passes from the superficial middle cerebral v. posteriorly over the lateral aspect of the temporal lobe to enter the transverse sinus.vena anastomotica inferior [NA], Browning's v., Labbé's v;
inferior basal v. tributary to the common basal v. draining the medial and posterior part of the inferior lobe in each lung.vena basalis inferior [NA];
inferior cardiac v. middle cardiac v
inferior v.'s of cerebellar hemisphere several v.'s draining the inferior portion of the cerebellar hemispheres; they terminate in the petrosal v.venae hemispherii cerebelli inferiores [NA];
inferior cerebral v.'s numerous cerebral v.'s that drain the undersurface of the cerebral hemispheres and empty into the cavernous and transverse sinuses.venae cerebri inferiores [NA];
inferior choroid v. a small v. draining the lower part of the choroid plexus of the lateral ventricle into the basal v.vena choroidea inferior [NA];
inferior epigastric v. corresponds to the artery of the same name and empties into the external iliac v. just proximal to the inguinal ligament.vena epigastrica inferior [NA], deep epigastric v;
v.'s of inferior eyelid inferior palpebral v.'s
inferior gluteal v.'s the venae comitantes of the inferior gluteal artery uniting at the sciatic foramen to form a common trunk which empties into the internal iliac v.venae gluteae inferiores [NA];
inferior hemorrhoidal v.'s obsolete term for inferior rectal v.'s.
inferior labial v. a tributary of the facial v. draining the lower lip.vena labialis inferior [NA];
inferior laryngeal v. the v. passing from the lower part of the larynx to the plexus thyroideus impar.vena laryngea inferior [NA];
inferior mesenteric v. a continuation of the superior rectal v. at the brim of the pelvis, ascending to the left of the aorta behind the peritoneum and emptying into the splenic v. or into the superior mesenteric v. or rarely in the angle between these v.'s.vena mesenterica inferior [NA];
inferior ophthalmic v. arises from the inferior palpebral and lacrimal v.'s and divides into two terminal branches, one of which runs to the pterygoid plexus while the other joins the superior ophthalmic v. or empties into the cavernous sinus.vena ophthalmica inferior [NA];
inferior palpebral v.'s v.'s of inferior eyelid; v.'s originatin gin the inferior eyelid and emptying into the angular v.venae palpebrales inferiores [NA], v.'s of inferior eyelid;
inferior phrenic v. the v. that drains the substance of the diaphragm and empties on the right side into the inferior vena cava, on the left side into the left suprarenal v.; often a second v. on the left side passes transversely across the diaphragm anterior to the esophageal hiatus to enter the inferior vena cava.vena phrenica inferior [NA];
inferior rectal v.'s v.'s that pass to the internal pudendal v. from the inferior rectal venous plexus around the anal canal.venae rectales inferiores [NA];
inferior thalamostriate v.'s v.'s draining the thalamus and striate body exiting the anterior perforated substance; tributary to the basal v.venae thalamostriatae inferiores [NA], striate v.'s, venae striatae;
inferior thyroid v. unpaired v. formed by v.'s from the isthmus and lateral lobe of the thyroid gland and from the plexus thyroideus impar; it terminates in the left brachiocephalic v.vena thyroidea inferior [NA], vena thyroidea ima;
inferior ventricular v. vena ventricularis inferior
inferior v. of vermis a v. draining part of the inferior part of the cerebellum; it courses on the inferior surface of the vermis and terminates in the straight sinus.vena vermis inferior [NA];
infrasegmental v.'s pars intersegmentalis [NA]; See intersegmental v.'s.
innominate v.'s obsolete term for brachiocephalic v.'s.
innominate cardiac v.'s the small superficial v.'s of the heart.Vieussens' v.'s;
insular v.'s venae insulares, under vena
intercapitular v.'s the v.'s connecting the dorsal and palmar v.'s in the hand, or the dorsal and plantar v.'s in the foot.venae intercapitales [NA];
intercostal v.'s See anterior intercostal v.'s, posterior intercostal v.'s, highest intercostal v., left superior intercostal v.
interlobar v.'s of kidney the v.'s in the kidney that parallel the interlobar arteries, receiving blood from arcuate v.'s, and terminate in the renal v.venae interlobares renis [NA];
interlobular v.'s of kidney they parallel the interlobular arteries and drain the peritubular capillary plexus, emptying into the arcuate v.'s.venae interlobulares renis [NA];
interlobular v.'s of liver the terminal branches of the portal v. that course in the portal canals between the conceptual liver lobules and empty into the liver sinusoids.venae interlobulares hepatis [NA];
intermediate antebrachial v. median antebrachial v
intermediate basilic v. the medial branch of the median antebrachial v. which joins the basilic v.vena intermedia basilica [NA], median basilic v., vena mediana basilica;
intermediate cephalic v. the lateral branch of the median antebrachial v. that joins the cephalic v. near the elbow.vena intermedia cephalica [NA], median cephalic v., vena mediana cephalica;
intermediate cubital v. median cubital v
intermediate v. of forearm median antebrachial v
internal auditory v.'s labyrinthine v.'s
internal cerebral v.'s paired v.'s passing caudally near the midline in the tela choroidea of the third ventricle, formed by the union of the choroid v., thalamostriate (terminal) v., and v. of septum pellucidum, and uniting caudally so as to form the great cerebral v.venae cerebri internae [NA], v.'s of Galen (1);
internal iliac v. runs from the upper border of the greater sciatic notch to the brim of the pelvis where it joins the external iliac v. to form the common iliac v.; it drains most of the territory supplied by the internal iliac artery.vena iliaca interna [NA];
internal jugular v. main venouus structure of the neck, formed as a continuation of the sigmoid sinus of the dura mater, contained within the carotid sheath as it descends the neck uniting, behind the sternoclavicular joint, with the subclavian v. to form the brachiocephalic v.vena jugularis interna [NA];
internal pudendal v. a tributary of the internal iliac v. that accompanies the internal pudendal artery as a single or double vessel. It drains the perineum.vena pudenda interna [NA];
internal thoracic v. venae comitantes of each artery of the same name, fusing into one at the upper part of the thorax and emptying into the brachiocephalic v. of the same side; receive drainage of anterior chest wall.vena thoracica interna [NA];
intersegmental v.'s a v. receiving blood from adjacent bronchopulmonary segments; it emerges from the inferior margin of a segment to become a tributary of a branch of a pulmonary v.infrasegmental part, intersegmental part of pulmonary vein, pars infrasegmentalis;
intervertebral v. one of numerous v.'s accompanying the spinal nerves through the intervertebral foramina, draining spinal cord and vertebral venous plexuses, and emptying in the neck into the vertebral v., in the thorax into the intercostal v.'s, in the lumbar and sacral regions into the lumbar and sacral v.'s.vena intervertebralis [NA];
intrasegmental v.'s a v. emerging from the bronchopulmonary segment it drains; a tributary to a branch of a pulmonary v.pars intrasegmentalis [NA], intrasegmental part;
jejunal and ileal v.'s the v.'s that drain the jejunum and ileum; they terminate in the superior mesenteric v.venae jejunales et ilei [NA];
jugular v.'s See anterior jugular v., external jugular v., internal jugular v. See also posterior anterior jugular v.
key v. a deep-seated, dilated v. causing a "spider burst" on the surface.
v.'s of kidney the tributaries of the renal v. that drain the kidney; they parallel the arteries in the kidney and consist of interlobular, arcuate, and interlobar v.'s.venae renis [NA];
v.'s of knee the v.'s that accompany the genicular arteries; they drain blood from the structures around the knee, terminating in the popliteal v.venae genus [NA];
Krukenberg's v.'s central v.'s of liver
Labbé's v. inferior anastomotic v
labial v.'s See anterior labial v.'s, posterior labial v.'s, inferior labial v., superior labial v.
labyrinthine v.'s one or more v.'s accompanying the labyrinthine artery; they drain the internal ear, pass out through the internal acoustic meatus, and empty into the transverse sinus or the inferior petrosal sinus.venae labyrinthi [NA], internal auditory v.'s;
lacrimal v. small v. which it drains the lacrimal gland, passing posteriorly through the orbit with the lacrimal artery to empty into the superior ophthalmic v.vena lacrimalis [NA];
large v. a v., such as the inferior vena cava, characterized by having a reduced or absent tunica media and an adventitia with large bundles of longitudinally disposed smooth muscle.
large saphenous v. great saphenous v
laryngeal v.'s See inferior laryngeal v., superior laryngeal v.
Latarget's v. prepyloric v
lateral atrial v. vena atrii lateralis
lateral circumflex femoral v.'s the v.'s that accompany the lateral circumflex femoral artery, usually terminating in the femoral v.venae circumflexae femoris laterales [NA];
lateral direct v.'s venae directae laterales, under vena
lateral v. of lateral ventricle vena atrii lateralis
v. of lateral recess of fourth ventricle vena recessus lateralis ventriculi quarti
lateral sacral v.'s several v.'s that receive the drainage of the sacral venous plexus and sacral intervertebral v.'s then accompany the corresponding artery and empty into the internal iliac v. on each side.venae sacrales laterales [NA];
lateral thoracic v. a tributary of the axillary v. that drains the lateral thoracic wall and communicates with the thoracoepigastric and intercostal v.'s.vena thoracica lateralis [NA];
left colic v. a tributary of the inferior mesenteric v. that accompanies the left colic artery and drains the left flexure and descending colon.vena colica sinistra [NA];
left coronary v. great cardiac v
left gastric v. arises from a union of v.'s from both surfaces of the cardia of the stomach and an esophageal tributary from the cardiac portion of the esophagus; it runs in the lesser omentum and empties into the portal v. See also esophageal v.'s.vena gastrica sinistra [NA], coronary v., vena coronaria ventriculi;
left gastroepiploic v. the v. that accompanies the left gastroepiploic artery along the greater curvature of the stomach; it empties into the splenic v.vena gastro-omentalis sinistra [NA], left gastroomental v;
left gastroomental v. left gastroepiploic v
left hepatic v.'s v.'s draining the lateral segments [II & III] of the left lobe of the liver which join to form a single or paired trunk of variable size which usually (90% of the time) merges with that formed by the middle hepatic v.'s prior to entering the terminal portion of the superior vena cava.venae hepaticae sinistrae [NA];
left inferior pulmonary v. the v. returning oxygenated blood from the inferior lobe of the left lung to the left atrium.vena pulmonalis inferior sinistra [NA];
left ovarian v. begins as the pampiniform plexus at the hilum of the ovary and empties into the left renal v.vena ovarica sinistra [NA];
left superior intercostal v. the v. formed by the union of the left second, third, and fourth intercostal v.'s; it passes forward across the arch of the aorta to empty into the left brachiocephalic v. and frequently communicates also with the accessory hemiazygos v.vena intercostalis superior sinistra [NA];
left superior pulmonary v. the v. returning oxygenated blood from the left superior lobe of the lung to the left atrium.vena pulmonalis superior sinistra [NA];
left suprarenal v. the v. from the hilum of the left suprarenal gland that passes downward to open into the left renal v.; it usually is joined by the left inferior phrenic v.vena suprarenalis sinistra [NA];
left testicular v. v. conveying blood from the left testis, originating as the pampiniform plexus and entering the left renal v.vena testicularis sinistra [NA];
left umbilical v. the v. that returns the blood from the placenta to the fetus; traversing the umbilical cord, it enters the fetal body at the umbilicus and passes thence into the liver, where it is joined by the portal v.; its blood then flows by way of the ductus venosus and the inferior vena cava to the right atrium.vena umbilicalis sinistra [NA];
levoatrio-cardinal v. the communication of a systemic v. with the left atrium, other than a left superior vena cava or coronary sinus; may be the right superior vena cava.
lingual v. receives blood from the tongue, sublingual and submandibular glands, and muscles of the floor of the mouth; empties into the internal jugular or the facial v.vena lingualis [NA];
long saphenous v. great saphenous v
long thoracic v. incorrect term for lateral thoracic v.
lumbar v.'s five in number, these v.'s accompany the lumbar arteries, drain the posterior body wall and the lumbar vertebral venous plexuses, and terminate anteriorly as follows: the first and second in the ascending lumbar v., the third and fourth in the inferior vena cava, and the fifth in the iliolumbar v.; all communicate via the ascending lumbar v.'s.venae lumbales [NA];
Marshall's oblique v. oblique v. of left atrium
masseteric v.'s plexiform v.'s accompanying the masseteric artery that empty into the pterygoid venous plexus.
mastoid emissary v. the vein that connects the sigmoid sinus with the occipital vein or one of the tributaries of the external jugular vein by way of the mastoid foramen.vena emissaria mastoidea [NA], emissarium mastoideum;
maxillary v. the posterior continuation of the pterygoid plexus; it joins the superficial temporal vein to form the retromandibular vein.vena maxillaris [NA];
Mayo's v. prepyloric v
medial atrial v. vena atrii medialis
medial circumflex femoral v.'s the venae comitantes that parallel the medial circumflex femoral artery.venae circumflexae femoris mediales [NA];
medial v. of lateral ventricle vena atrii medialis
median antebrachial v. it begins at the base of the dorsum of the thumb, curves around the radial side, ascends the middle of the forearm, and just below the bend of the elbow divides into the intermediate basilic and intermediate cephalic v.'s; sometimes it divides lower down, one branch going to the basilic v., the other to the intermediate v. of the elbow.vena intermedia antebrachii [NA], intermediate antebrachial v., intermediate v. of forearm, median v. of forearm, vena mediana antebrachii;
median basilic v. intermediate basilic v
median cephalic v. intermediate cephalic v
median cubital v. a v. which passes across the anterior aspect of the elbow from the cephalic v. to the basilic v.; commonly this v. is replaced by intermediate basilic and intermediate cephalic v.'s. The median cubital v. is often used for venipuncture.vena intermedia cubiti [NA], intermediate cubital v., vena mediana cubiti;
median v. of forearm median antebrachial v
median v. of neck a v. occasionally present due to fusion of the two anterior jugular v.'s.
median sacral v. an unpaired v. accompanying the middle sacral artery receiving blood from the sacral venous plexus and emptying into the left common iliac v.vena sacralis mediana [NA];
mediastinal v.'s several small v.'s from the mediastinum emptying into the brachiocephalic v.'s or the superior vena cava.venae mediastinales [NA];
medium v. a v. characterized by having a thinner wall and larger lumen than its corresponding artery, and a media with small bundles of circular muscle separated by considerable connective tissue; valves also occur.
v.'s of medulla oblongata venae medullae oblongatae, under vena
meningeal v.'s v.'s that accompany the meningeal arteries; they communicate with venous sinuses and diploic v.'s and drain into regional v.'s outside the cranial vault.venae meningeae [NA];
mesencephalic v.'s venae mesencephalicae, under vena
mesenteric v.'s See inferior mesenteric v., superior mesenteric v.
metacarpal v.'s See dorsal metacarpal v.'s, palmar metacarpal v.'s.
middle cardiac v. begins at the apex of the heart (where it anastomoses with the great cardiac v.), and ascends within the posterior interventricular sulcus to the coronary sinus.vena cordis media [NA], inferior cardiac v;
middle colic v. the tributary of the superior mesenteric v. that carries drainage of the transverse colon and accompanies the middle colic artery.vena colica media [NA];
middle hemorrhoidal v.'s obsolete term for middle rectal v.'s.
middle hepatic v.'s v.'s draining the central portion of the liver (the superior anterior segment [VIII] and the left side of the inferior anterior segment [V] of the right lobe and the medial segment [IV] of the left lobe) which join to form a trunk that merges with that of the left hepatic v.'s about 90% of the time prior to entering the left side of the inferior vena cava.venae hepaticae mediae [NA];
middle meningeal v.'s the venae comitantes of the middle meningeal artery that empty into the pterygoid plexus.venae meningeae mediae [NA];
middle rectal v.'s several v.'s that pass from the rectal venous plexus (in which they anastomose with the superior rectal v.'s) to the internal iliac v., which ultimately drains into the inferior vena cava. Since the superior rectal v.'s ultimately drain into the portal v., the middle retal v.'s participate in a portocaval anastomosis, and the rectal venous plexus is subject to varicosities during portal hypertension.venae rectales mediae [NA];
middle temporal v. it arises near the lateral angle of the eye and joins the superficial temporal v.'s to form the retromandibular v.vena temporalis media [NA];
middle thyroid v. it passes from the thyroid gland across the common carotid artery with the inferior thyroid arteries to empty into the internal jugular v.vena thyroidea media [NA];
musculophrenic v.'s the v.'s that accompany the musculophrenic artery and drain blood from the upper abdominal wall, and anterior portions of the lower intercostal spaces and the diaphragm.venae musculophrenicae [NA];
nasofrontal v. the v. located in the anterior medial part of the orbit that connects the superior ophthalmic v. with the angular v.vena nasofrontalis [NA];
oblique v. of left atrium a small v. on the posterior wall of the left atrium which merges with the great cardiac v. to form the coronary sinus; it is developed from the left common cardinal v., and occasionally persists as a left superior vena cava.vena obliqua atrii sinistri [NA], Marshall's oblique v;
obturator v. formed by the union of tributaries draining the hip joint and the obturator and adductor muscles of the thigh; it enters the pelvis by the obturator canal as venae comitantes of the obturator artery and empties into the internal iliac v.vena obturatoria [NA];
occipital v. drains the occipital region and empties into the internal jugular v. or the suboccipital plexus.vena occipitalis [NA];
occipital cerebral v.'s the superior cerebral v.'s draining the occipital cortex and emptying into the superior sagittal sinus and the transverse sinus.venae occipitales [NA];
occipital emissary v. an inconstant vessel perforating the squama of the occipital bone to connect the occipital v.'s with the confluens sinuum.vena emissaria occipitalis [NA], emissarium occipitale;
v. of olfactory gyrus vena gyri olfactorii
ophthalmic v.'s See inferior ophthalmic v., superior ophthalmic v.
ovarian v.'s See right ovarian v., left ovarian v.
palatine v. drains the palatine regions and empties into the facial v.vena palatina [NA];
palmar digital v.'s paired venae comitantes of the proper and common digital arteries that empty into the superficial palmar venous arch.venae digitales palmares [NA];
palmar metacarpal v.'s v.'s emptying into the deep venous arch from which the radial and ulnar v.'s arise.venae metacarpeae palmares [NA];
palpebral v.'s v.'s draining the superior eyelid posteriorly as tributaries of the superior ophthalmic v.venae palpebrales [NA], v.'s of eyelids;
pancreatic v.'s v.'s draining the pancreas, emptying into the splenic v. and the superior mesenteric v.venae pancreaticae [NA];
pancreaticoduodenal v.'s v.'s that accompany the superior and inferior pancreaticoduodenal arteries, emptying into the superior mesenteric or portal v.venae pancreaticoduodenales [NA];
paraumbilical v.'s several small v.'s arising from cutaneous v.'s about the umbilicus running along the round ligament of the liver, and terminating as accessory portal v.'s in the substance of this organ; they constitute a portocaval anastomosis and are subject to varicosity druign portal hypertension; varicose paraumbilical v.'s form the "caput medussae".venae paraumbilicales [NA], Sappey's v.'s;
parietal v.'s the superficial v.'s draining the parietal cerebral cortex and emptying into the superior sagittal sinus.venae parietales [NA];
parietal emissary v. the v. that connects the superior sagittal sinus with the tributaries of the superficial temporal v. and other v.'s of the scalp.vena emissaria parietalis [NA], emissarium parietale, Santorini's v;
parotid v.'s branches draining part of the parotid gland and emptying into the retromandibular v.venae parotidea [NA], posterior parotid v.'s;
pectoral v.'s v.'s draining the pectoral muscles and emptying directly into the subclavian v.venae pectorales [NA];
peduncular v.'s venae pedunculares, under vena
perforating v.'s the v.'s that accompany the perforating arteries from the profunda femoris artery; they drain blood from the vastus lateralis and hamstring muscles and terminate in the profunda femoris v.venae perforantes [NA];
pericardiacophrenic v.'s the v.'s accompanying the pericardiacophrenic artery and emptying into the brachiocephalic v.'s or superior vena cava.venae pericardiacophrenicae [NA];
pericardial v.'s several small v.'s from the pericardium emptying into the brachiocephalic v.'s or superior vena cava.venae pericardiacae [NA];
peroneal v.'s venae comsitantes of the peroneal artery; they join the posterior tibial v.'s to enter the popliteal v.venae peroneae [NA], venae fibulares [NA], fibular v.'s;
petrosal v. a short trunk formed by the union of four or five cerebellar and pontine v.'s opposite the middle cerebellar peduncle; it terminates in the superior petrosal sinus. See also superior petrosal sinus, inferior petrosal sinus.vena petrosa [NA];
pharyngeal v.'s several v.'s from the pharyngeal venous plexus emptying into the internal jugular v.venae pharyngeae [NA];
phrenic v.'s See inferior phrenic v., superior phrenic v.'s.
plantar digital v.'s drain the plantar and distal dorsal aspects (nail beds) of the toes and pass back to form four metatarsal v.'s that in turn empty into the plantar venous arch.venae digitales plantares [NA];
plantar metatarsal v.'s v.'s receiving the plantar digital v.'s and draining in turn into the deep plantar venous arch, which empties into the medial and lateral plantar v.'s.venae metatarseae plantares [NA];
v.'s of pons pontine v.'s
pontine v.'s several v.'s running transversely on the pons to join the petrosal v.venae pontis [NA], v.'s of pons;
popliteal v. formed at the lower border of the popliteus muscle by the union of the anterior and posterior tibial v.'s, ascends through the popliteal space where it receives the lesser saphenous v. and passes through the adductor hiatus, entering the adductor canal as the femoral v.vena poplitea [NA];
portal v. a wide short v. formed by the superior mesenteric and splenic v. posterior to the neck of the pancreas, ascending in front of the inferior vena cava, and dividing at the right end of the porta hepatis into right and left branches, which ramify within the liver.vena portae hepatis [NA], hepatic portal v., vena portalis;
posterior anterior jugular v. a variable tributary of the external jugular v. arising in the upper posterior part of the neck.
posterior auricular v. drains the region posterior to the ear then merges with the retromandibular v. to form the external jugular v.vena auricularis posterior [NA];
posterior cardinal v.'s See cardinal v.'s.
posterior facial v. retromandibular v
v. of posterior horn vena cornus posterioris
posterior intercostal v.'s v.'s draining the intercostal spaces posteriorly; those of the first 1-C space drain into the brachiocephalic v.'s; from spaces 2-3 they drain into right and left superior intercostal v.'s; from the fourth to the eleventh spaces on the right they are tributaries of the azygos v.; on the left they empty into either the hemiazygos or accessory hemiazygos v.'s.venae intercostales posteriores [NA];
posterior labial v.'s they pass posteriorly from the labia majora and minora to the internal pudendal v.'s.venae labiales posteriores [NA];
posterior v. of left ventricle arises on the diaphragmatic surface of the heart near the apex, runs to the left and parallel to the posterior interventricular sulcus, and empties in the coronary sinus.vena posterior ventriculi sinistri [NA];
posterior marginal v. vena corporis callosi dorsalis
posterior parotid v.'s parotid v.'s
posterior pericallosal v. vena corporis callosi dorsalis
posterior scrotal v.'s v.'s from the posteriro aspect of the scrotum to the internal pudendal v.'s.venae scrotales posteriores [NA];
posterior v. of septum pellucidum v. draining the posterior part of the transparent septum; it empties into the superior thalamostriate v.vena septi pellucidi posterior [NA];
posterior tibial v.'s venae comsitantes of the posterior tibial artery that join those of the anterior tibial artery to form the popliteal v.venae tibiales posteriores [NA;
precentral cerebellar v. an unpaired v. originating in the precentral cerebellar fissure passing anterior and superior to the culmen on its way to terminate in the great cerebral v.vena precentralis cerebelli [NA];
prefrontal v.'s venae prefrontales, under vena
prepyloric v. a tributary of the right gastric v. that passes anterior to the pylorus at its junction with the duodenum.vena prepylorica [NA], Latarget's v., Mayo's v;
v. of pterygoid canal a v. accompanying the nerve and artery through the pterygoid canal and emptying into the pharyngeal venous plexus.vena canalis pterygoidei [NA], vidian v;
pudendal v.'s See external pudendal v.'s, internal pudendal v.
pulmonary v.'s four v.'s, two on each side, conveying oxygenated blood from the lungs to the left atrium of the heart. Those from the left lung and the inferior v. from the right lung are lobar v.'s, each draining a single lobe with the corresponding name; the right superior pulmonary v. drains both the superior and middle lobes of the right lung. See also left inferior pulmonary v., left superior pulmonary v., right inferior pulmonary v., right superior pulmonary v.venae pulmonales [NA];
pyloric v. right gastric v
radial v.'s venae comitantes of the raidal artery continuing from those of the radial aspect of the deep palmar arch, draining into the venae comitantes of the brachial artery in the cubital fossa.venae radiales [NA];
renal v.'s large v.'s formed at the renal hilus by the merger of the segmental v.'s anterior to the corresponding arteries; they open at right angles into the inferior vena cava at the level of the second lumbar vertebra. The left renal v. receives the left suprarenal v. and the left gonadal v., and passes through the angle between the abdominal aorta and superior mesenteric artery where it may be compressed.venae renales [NA];
retromandibular v. it is formed by the union of the superficial temporal and maxillary v.'s in front of the ear, runs posterior to the ramus of the mandible through the parotid gland, and unites with the posterior auricular v. to form the external jugular v.; it usually has a large communicating branch with the facial v.vena retromandibularis [NA], posterior facial v., temporomaxillary v., vena facialis posterior;
Retzius' v.'s portacaval anastomoses formed from v.'s in the walls of retroperitoneal viscera, such as the ascending and descending colon, passing to the tributaries of the inferior vena cava in the posterior body wall instead of those of the portal v.Ruysch's v.'s;
right colic v. the v. that parallels the right colic artery and drains blood from the ascending colon and right colic flexure.vena colica dextra [NA];
right gastric v. it receives v.'s from both surfaces of the upper portion of the stomach, runs to the right along the lesser curvature of the stomach, and empties into the portal v.vena gastrica dextra [NA], pyloric v;
right gastroepiploic v. a tributary of the superior mesenteric v. that parallels the right gastroepiploic artery along the greater curvature of the stomach.vena gastro-omentalis dextra [NA], right gastroomental v;
right gastroomental v. right gastroepiploic v
right hepatic v.'s v.'s draining much of the right lobe of the liver (posterior segments [VI & VII] and part of the inferior anterior segment [V]) which merge to form a single or sometimes double trunk, draining into the right side of the suprahepatic portion of the inferior vena cava (between the superior surface of the liver and the diaphragm); when single, it is the largest v. of the liver.venae hepaticae dextrae [NA];
right inferior pulmonary v. the v. returning oxygenated blood from the inferior lobe of the right lung to the left atrium.vena pulmonalis inferior dextra [NA];
right ovarian v. begins as the pampiniform plexus at the hilum of the ovary and opens into the inferior vena cava.vena ovarica dextra [NA];
right superior intercostal v. a tributary of the azygos v. formed by the union of the right second, third, and fourth posterior intercostal v.'s.vena intercostalis superior dextra [NA];
right superior pulmonary v. the v. returning oxygenated blood from the superior and middle lobes of the right lung to the left atrium.vena pulmonalis superior dextra [NA];
right suprarenal v. the short v. that passes from the hilum of the right suprarenal to the inferior vena cava.vena suprarenalis dextra [NA];
right testicular v. begins as the pampiniform plexus and ascends to joint the inferior vena cava.vena testicularis dextra [NA];
Rosenthal's v. basal v. of Rosenthal
Ruysch's v.'s Retzius' v.'s
sacral v.'s See lateral sacral v.'s, median sacral v.
Santorini's v. parietal emissary v
saphenous v.'s See accessory saphenous v., great saphenous v., small saphenous v.
Sappey's v.'s paraumbilical v.'s
scleral v.'s small v.'s draining the sclera; they are tributaries to the anterior ciliary v.'s.venae sclerales [NA];
scrotal v.'s See anterior scrotal v.'s, posterior scrotal v.'s.
v. of septum pellucidum See anterior v. of septum pellucidum, posterior v. of septum pellucidum.
short gastric v.'s small vessels that drain the fundus and left portion of the stomach wall and empty into the splenic v.venae gastricae breves [NA];
short saphenous v. small saphenous v
sigmoid v.'s the several tributaries of the inferior mesenteric v. that drain the sigmoid colon.venae sigmoideae [NA];
small v. a v. in which the three tunics are poorly defined and thin; longitudinal elastic networks occur and the smooth muscle of the media, which is circularly arranged, may be incomplete or in one or two layers.
small cardiac v. an inconstant vessel, accompanying the right coronary artery in the coronary sulcus, from the right margin of the right ventricle, and emptying into the coronary sinus or the middle cardiac v.vena cordis parva [NA];
smallest cardiac v.'s venae cordis minimae, under vena
small saphenous v. arises on the lateral side of the foot from a union of the dorsal v. of the little toe with the dorsal venous arch, ascends behind the lateral malleolus, along the lateral border of the calcanean tendon and then through the middle of the calf to the lower portion of the popliteal space where it empties into the popliteal v.vena saphena parva [NA], short saphenous v;
spermatic v. See right testicular v., left testicular v.
spinal v.'s the v.'s that drain the spinal cord; they form a plexus on the surface of the cord from which v.'s pass along the spinal roots to the internal vertebral venous plexus.venae spinales [NA];
spiral v. of modiolus the v. running a spiral course in the modiolus of the cochlea; it is tributary to both the labyrinthine v. and the v. of the cochlear canaliculus.vena spiralis modioli [NA];
splenic v. arises by the union of several small v.'s at the hilum on the anterior surface of the spleen with the short gastric and left gastroepiploic v.'s; passes backward through the splenorenal ligament to the left kidney, then runs behind the upper border of the pancreas to the neck of the pancreas where it joins the superior mesenteric v. to form the portal v.vena splenica [NA], vena lienalis;
stellate v.'s venulae stellatae, under venula
Stensen's v.'s vortex v.'s
sternocleidomastoid v. it arises in the sternocleidomastoid muscle and accompanies the sternocleidomastoid branch of the occipital artery; it drains into the internal jugular or superior thyroid v.vena sternocleidomastoidea [NA];
striate v.'s inferior thalamostriate v.'s
vein strip´per an instrument used to remove a vein by tying the vein at one end and pulling it, tearing its branches, and thus, stripping it out of the body.
stylomastoid v. it drains the tympanic cavity, traverses the facial canal exiting via the stylomastoid foramen, and empties into the retromandibular v.vena stylomastoidea [NA];
subclavian v. the direct continuation of the axillary v. at the lateral border of the first rib; it passes medially to join the internal jugular v. and form the brachiocephalic v. on each side.vena subclavia [NA];
subcutaneous v.'s of abdomen the network of superficial v.'s of the abdominal wall that empty into the thoracoepigastric, superficial epigastric, or superior epigastric v.'s and form portocaval anastomoses through their communications with the paraumbilical v.'s.venae subcutaneae abdominis [NA];
sublingual v. v. which accompanies the sublingual artery in the floor of the mouth, lateral to the hypoglossal nerve; it may join the deep lingual v. to form the lingual v., or join the vena comitans nerve hypoglossi.vena sublingualis [NA];
submental v. a v. situated below the chin, anastomosing with the sublingual v., connecting with the anterior jugular v., and emptying into the facial v.vena submentalis [NA];
superficial v. one of a number of v.'s that course in the subcutaneous tissue and empty into deep v.'s; they form prominent systems of vessels in the limbs and are usually not accompanied by arteries.vena cutanea [NA], cutaneous v;
superficial cerebral v.'s the v.'s on the superficial surface of the cerebral hemispheres; they comprise three groups: superior, middle, and inferior.venae cerebri superficiales [NA];
superficial circumflex iliac v. corresponding to the artery of the same name, emptying usually into the great saphenous v., or sometimes into the femoral v.vena circumflexa iliaca superficialis [NA];
superficial dorsal v.'s of clitoris a pair of v.'s on the dorsum of the clitoris, tributary to the external pudendal v. on either side.venae dorsales clitoridis superficiales [NA];
superficial dorsal v.'s of penis a pair of v.'s on the dorsum of the penis superficial to the fascia penis; they are tributaries of the external pudendal v.'s on each side.venae dorsales penis superficiales [NA];
superficial epigastric v. drains the lower and medial part of the anterior abdominal wall and empties into the great saphenous v.vena epigastrica superficialis [NA];
superficial middle cerebral v. a large v. passing along the line of the sylvian fissure to join the cavernous sinus; it communicates with the superior sagittal sinus and transverse sinus via the superior and inferior anastomotic v.'s, respectively.vena cerebri media superficialis [NA];
superficial temporal v.'s v.'s that pass from the temporal region to join the maxillary v. to form the retromandibular v.venae temporales superficiales [NA];
superior anastomotic v. a large communicating v. between the superficial middle cerebral v. and the superior sagittal sinus; it passes upward from the lateral sulcus, often following the line of the central sulcus (Rolando's fissure).vena anastomotica superior [NA], Trolard's v;
superior basal v. tributary to the common basal v. draining the lateral and anterior part of the inferior lobe of each lung.vena basalis superior [NA];
superior v.'s of cerebellar hemisphere several v.'s draining the superior part of the cerebellar hemispheres; they terminate in the superior petrosal sinus or the petrosal v.venae hemispherii cerebelli superiores [NA];
superior cerebral v.'s numerous (8 to 10) v.'s that drain the dorsal convexity of the cortical hemisphere and empty into the superior sagittal sinus, curving rostrally in passing through the subdural space so as to enter the sinus at an acute forward angle.venae cerebri superiores [NA];
superior choroid v. a tortuous v. that follows the choroid plexus of the lateral ventricle and unites with the superior thalamostriate v. and the anterior v. of the transparent septum to form the internal cerebral v.vena choroidea superior [NA];
superior epigastric v.'s the venae comitantes of the artery of the same name, tributaries of the internal thoracic v.venae epigastricae superiores [NA];
v.'s of superior eyelid superior palpebral v.'s
superior gluteal v.'s the v.'s that accompany the superior gluteal artery, entering the pelvis as two v.'s which unite into one and empty into the internal iliac v.venae gluteae superiores [NA];
superior hemorrhoidal v. outmoded term for superior rectal v.
superior intercostal v. See left superior intercostal v., right superior intercostal v.
superior labial v. v.'s taking blood from the upper lip and discharging into the facial v.vena labialis superior [NA];
superior laryngeal v. vein which accompanies the superior laryngeal artery and empties into the superior thyroid vein.vena laryngea superior [NA];
superior mesenteric v. begins at the ileum in the right iliac fossa, ascends in the root of the mesentery, and unites behind the pancreas with the splenic v. to form the hepatic portal v.vena mesenterica superior [NA];
superior ophthalmic v. begins anteriorly from the nasofrontal v., passes along the upper part of the medial wall of the orbit, passes through the superior orbital fissure, to empty into the cavernous sinus.vena ophthalmica superior [NA];
superior palpebral v.'s v.'s draining the superior eyelid anteriorly into the angular v.venae palpebrales superiores [NA], v.'s of superior eyelid;
superior phrenic v.'s small v.'s that drain the upper surface of the diaphragm; they are tributaries of the azygos and hemiazygos v.'s.venae phrenicae superiores [NA];
superior rectal v. it drains the greater part of the rectal venous plexus, and ascends between the layers of the mesorectum to the brim of the pelvis, where it becomes the inferior mesenteric v. As a tributary of the portal v., it forms a portocaval anastomosis with the middle and inferior rectal v.'s (caval tributaries) via the rectal venous plexus.vena rectalis superior [NA];
superior thalamostriate v. a long v. passing forward in the groove between the thalamus and caudate nucleus, covered by the lamina affixa, receiving the transverse caudate v.'s along its lateral side, and joining at the caudal wall of Monro's foramen with the choroidal v. and v. of septum pellucidum to form the internal cerebral v.vena terminalis [NA], vena thalamostriata superior [NA], terminal v., v. of corpus striatum;
superior thyroid v. receives blood from the upper part of the thyroid gland and larynx, accompanies the artery of the same name, and empties into the internal jugular v.vena thyroidea superior [NA];
superior v. of vermis a v. draining part of the superior part of the cerebellum; it runs on the superior surface of the vermis to terminate in the internal cerebral v.vena vermis superior [NA];
supraorbital v. drains the front of the scalp and unites with the supratrochlear v.'s to form the angular v.vena supraorbitalis [NA];
suprarenal v.'s See right suprarenal v., left suprarenal v.
suprascapular v. v. that accompanies the suprascapular artery and empties into the external jugular v.vena suprascapularis [NA], transverse v. of scapula, vena transversa scapulae;
supratrochlear v.'s several v.'s that drain the front part of the scalp and unite with the supraorbital v. to form the angular v.venae supratrochleares [NA], frontal v.'s (2), venae frontales (2), venae frontales (1);
supreme intercostal v. highest intercostal v
surface thalamic v.'s venae directae laterales, under vena
temporal v.'s See middle temporal v., deep temporal v.'s, superficial temporal v.'s.
v.'s of temporomandibular joint several small tributaries to the retromandibular v. from the temporomandibular joint.venae articulares temporomandibulares;
temporomaxillary v. retromandibular v
terminal v. superior thalamostriate v
testicular v.'s See right testicular v., left testicular v.
thalamostriate v.'s See inferior thalamostriate v.'s, superior thalamostriate v.
thebesian v.'s venae cordis minimae, under vena
thoracic v.'s See internal thoracic v., lateral thoracic v.
thoracoacromial v. corresponding to the artery of the same name, empties into the axillary v., sometimes by a common trunk with the cephalic v.vena thoracoacromialis [NA], thoracic axis (2);
thoracoepigastric v. one of two v.'s, sometimes a single v., arising from the region of the superficial epigastric v. and opening into the axillary or the lateral thoracic v., thus forming an anastomotic or collateral pathway between tributaries of the inferior and superior venae cavae.vena thoracoepigastrica [NA];
thymic v.'s a number of small v.'s from the thymus emptying into the left brachiocephalic v.venae thymicae [NA];
thyroid v.'s See inferior thyroid v., middle thyroid v., superior thyroid v., plexus thyroideus impar.
tracheal v.'s several small venous trunks from the trachea, emptying into the brachiocephalic v.'s or the superior vena cava.venae tracheales [NA];
transverse cervical v.'s venae comitantes of the corresponding arteries, emptying into the external jugular v. or sometimes into the subclavian v.venae transversae colli [NA], transverse v.'s of neck;
transverse v. of face transverse facial v
transverse facial v. a tributary of the superficial temporal or retromandibular v.'s, anastomosing with the facial v.vena transversa faciei [NA], transverse v. of face;
transverse v.'s of neck transverse cervical v.'s
transverse v. of scapula suprascapular v
Trolard's v. superior anastomotic v
tympanic v.'s v.'s exiting from the tympanic cavity through the petrotympanic fissure with the chorda tympani and emptying into the retromandibular v.venae tympanicae [NA];
ulnar v.'s venae comitantes of the ulnar artery, continuing from those of the supericial palmar arch and joining with those of the radial artery to form the brachial veins in the cubital fossa.venae ulnares [NA];
umbilical v. See left umbilical v.
v. of uncus vena unci
uterine v.'s two v.'s on each side which arise from the uterine venous plexus, pass through a part of the broad ligament and then through a peritoneal fold, and empty into the internal iliac v.venae uterinae [NA];
varicose v.'s permanent dilation and tortuosity of v.'s, most commonly seen in the legs, probably as a result of congenitally incomplete valves; there is a predisposition to varicose v.'s among persons in occupations requiring long periods of standing, and in pregnant women.
vertebral v. a v. derived from tributaries (venae comitantes) which run through the foramina in the transverse processes of the first six cervical vertebrae and form a plexus around the vertebral artery; it empties as a single trunk into the brachiocephalic v.'s.vena vertebralis [NA];
v.'s of vertebral column includes the internal and external vertebral venous plexuses, the basivertebral v.'s, and the anterior and posterior spinal v.'s.venae columnae vertebralis [NA];
Vesalius' v. the emissary v. passing through the foramen venosum.
vesical v.'s v.'s that drain the vesical venous plexus; they join the internal iliac v.'s.venae vesicales [NA];
vestibular v.'s v.'s draining the saccule and utricle; they are tributaries of both the labyrinthine v.'s and the v. of the vestibular aqueduct.venae vestibulares [NA];
v. of vestibular aqueduct a small v. accompanying the endolymphatic duct; it drains much of the vestibular portion of the labyrinth and terminates in the inferior petrosal sinus.vena aqueductus vestibuli [NA];
v. of vestibular bulb the v. draining the bulb of the vestibule; a tributary of the internal pudendal v.vena bulbi vestibuli [NA];
vidian v. v. of pterygoid canal
Vieussens' v.'s innominate cardiac v.'s
vitelline v. a v. returning blood from the yolk sac to the embryo.vena vitellina;
vortex v.'s several v.'s (usually four) from the vascular tunic formed of v.'s accompanying the posterior ciliary arteries and the ciliary body; then drain into the superior or inferior ophthalmic v.venae vorticosae [NA], venae choroideae oculi [NA], choroid v.'s of eye, Stensen's v.'s, vasa vorticosa, vorticose v.'s;
vorticose v.'s vortex v.'s
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