plexus

plexus, pl. plexus plexuses (plek´sus, -sus-ez) [NA]

A network or interjoining of nerves and blood vessels or of lymphatic vessels. [L. a braid]
abdominal aortic p. an autonomic p. surrounding the abdominal aorta, directly continuous with the thoracic aortic p. above and continued inferior to the bifurcaion of the aorta as the superior hypogastric plexus.p. aorticus abdominalis [NA];
acromial p. acromial arterial network
annular p. a nerve p. near the corneoscleral junction from which myelinated and unmyelinated nerves pass to the cornea.p. annularis;
p. annula´ris annular p
p. of anterior cerebral artery an autonomic p. accompanying the anterior cerebral artery, derived from the internal carotid p.p. arteriae cerebri anterioris;
anterior coronary p. the part of the cardiac p. that accompanies the coronary arteries on the anterior aspect of the heart.
aortic lymphatic p. a p. of lymph nodes and connecting vessels lying along the lower portion of the abdominal aorta.p. aorticus;
p. aor´ticus aortic lymphatic p
p. aor´ticus abdomina´lis [NA] abdominal aortic p
p. aor´ticus thora´cicus [NA] thoracic aortic p
areolar venous p. a venous p. in the areola surrounding the nipple, formed by the mammary veins, and sending its blood to the lateral thoracic vein.p. venosus areolaris [NA], circulus venosus halleri, Haller's circle (2), vascular circle (2), venous circle of mammary gland;
p. arte´riae cer´ebri anterio´ris p. of anterior cerebral artery
p. arte´riae cer´ebri me´diae p. of middle cerebral artery
p. arte´riae choroi´deae p. of choroid artery
ascending pharyngeal p. an autonomic p. on the artery of the same name, formed of fibers from the superior cervical ganglion.p. pharyngeus ascendens;
Auerbach's p. myenteric p
p. auricula´ris poste´rior posterior auricular p
autonomic plexuses p.'s of nerves in relation to blood vessels and viscera, the component fibers of which are sympathetic, parasympathetic, and sensory.p. autonomici [NA];
p. autono´mici [NA] autonomic plexuses
p. axilla´ris axillary p
axillary p. a lymphatic p. formed of the lymph nodes, with their afferent and efferent vessels, in the axilla.p. axillaris;
basilar p. a venous p. on the clivus, connected with the cavernous and petrosal sinuses and the internal vertebral (epidural) venous p.p. basilaris [NA], basilar sinus;
p. basila´ris [NA] basilar p
Batson's p. vertebral venous system
brachial p. major nerve p. formed of the ventral primary rami of the fifth cervical to first thoracic spinal nerves for innervation of the upper limb. The ventral primary rami entering into formation of the p. constitute the roots of the p.; the roots are located in the posterior triangle of the neck, converging to emerge from the scalenus anterior and medius muscles. As they emerge from the scalene hiatus, the C5 and C6 roots combine to form the superior trunk, C7 remains alone as the middle trunk and the C8 and T1 roots combine to form the inferior trunk of the p. The trunks pass beneath the clavicle, passing from the neck into the axilla through the cervicoaxillary canal. As they cross the first rib, all three trunks divide into anterior and posterior divisions of the p. Nerve fibers contained within anterior divisions are destined for the anterior aspect of the limb; those contained within the posterior divisions are destined for the posterior aspect of the limb. Within the axilla, the anterior divisions of the superior and middle trunks merge to form the lateral cord of the p.; the anterior division of the inferior trunk becomes the medial cord of the p., and the posterior divisions of all three trunks become the posterior cord, the cords being named for their position in relation to the axillary artery, which they run parallel to and surround. The cords of the brachial p. give rise to most of the named peripheral nerves which are the products of the p. formation. The major nerves of the lateral cord are the musculocutaneous nerve and the lateral root of the median nerve. The medial cord gives rise to the ulnar and medial root of the median nerve. The lateral and medial roots of the median nerve merge to form the medial nerve. The posterior cord of the p. gives rise to the radial and axillary nerves.p. brachialis [NA];
p. brachia´lis [NA] brachial p
cardiac p. a wide-meshed network of anastomosing cardiopulmonary and splanchnic nerves arising from the afferent and autonomic nerve fibers (sympathetic) and vagus (parasympathetic) nerves, surrounding the arch of the aorta, the pulmonary artery, and continuing to the atria, ventricles, and coronary vessels.p. cardiacus [NA];
p. cardi´acus [NA] cardiac p
p. cardi´acus profun´dus deep cardiac p
p. cardi´acus superficia´lis superficial cardiac p
p. carot´icus commu´nis [NA] common carotid p
p. carot´icus exter´nus [NA] external carotid p
p. carot´icus inter´nus internal carotid venous p
p. caverno´si concha´rum [NA] cavernous p. of conchae
p. caverno´sus intracavernous p
cavernous p. of clitoris cavernous nerves of clitoris, under nerve
cavernous p. of conchae erectile tissue in the mucous membrane covering the conchae of the nasal cavity.p. cavernosi concharum [NA], corpus cavernosum conchae;
cavernous p. of penis cavernous nerves of penis, under nerve
celiac p. a network related to the celiac trunk. See celiac (nervous) p., celiac (lymphatic) p.
celiac (lymphatic) p. a network formed of the efferent and afferent lymphatic vessels of the celiac lymph nodes and related to the celiac trunk; the afferent lymphatic vessels bring lymph primarily from structures served by the celiac artery (stomach, duodenum, pancreas, and visceral aspect of the liver); the efferent vessels drain into the cisterna chyli/thoracic duct via the intestinal lymph trunks.
celiac (nervous) p. the most substantial, superior portion of the abdominal aortic plexus lying anterior to the aorta at the level of origin of the celiac trunk (vertebral level T-12); the celiac ganglia lie within the plexus; it is formed by contributions from the greater splanchnic and vagus (especially the posterior or right vagus) nerves and communicating branches to and from the superior mesenteric and renal plexuses and ganglia; most sympathetic, parasympathetic and visceral afferent fibers serving the abdominal viscera pass through this plexus.p. celiacus [NA], solar p;
p. celi´acus [NA] celiac (nervous) p
cervical p. formed by loops joining the adjacent ventral primary rami of the first four cervical nerves and receiving gray communicating rami from the superior cervical ganglion; it lies deep to the sternocleidomastoid muscle, and sends out numerous cutaneous, muscular, and communicating rami.p. cervicalis [NA];
p. cervica´lis [NA] cervical p
choroid p. a vascular proliferation or fringe of the tela choroidea in the third, fourth and lateral cerebral ventricles; it secretes cerebrospinal fluid thereby regulating to some degree the intraventricular pressure.p. choroideus [NA], tela vasculosa;
p. of choroid artery an autonomic p. accompanying the artery of the same name, derived from the internal carotid p.p. arteriae choroideae;
p. choroi´deus [NA] choroid p
p. choroi´deus ventric´uli latera´lis [NA] choroid p. of lateral ventricle
p. choroi´deus ventric´uli quar´ti [NA] choroid p. of fourth ventricle
p. choroi´deus ventric´uli ter´tii [NA] choroid p. of third ventricle
choroid p. of fourth ventricle one of two vascular fringes of pia mater projecting on either side from the lower part of the roof of the fourth cerebral ventricle.p. choroideus ventriculi quarti [NA];
choroid p. of lateral ventricle the vascular fringe that projects from the choroidal fissure into each lateral ventricle.p. choroideus ventriculi lateralis [NA];
choroid p. of third ventricle the double row of vascular projections from the undersurface of the tela choroidea where it roofs over the third ventricle.p. choroideus ventriculi tertii [NA];
ciliary ganglionic p. an autonomic p. lying on the ciliary muscle, derived from the oculomotor, trigeminal, and sympathetic.p. gangliosus ciliaris;
coccygeal p. a small p. formed by the fifth sacral and the coccygeal nerves; it gives origin to the anococcygeal nerves.p. coccygeus [NA];
p. coccyg´eus [NA] coccygeal p
common carotid p. an autonomic p. accompanying the artery of the same name formed by fibers from the middle cervical ganglion.p. caroticus communis [NA];
p. corona´rius cor´dis coronary p
coronary p. the continuation of the cardiac p. onto the coronary arteries.p. coronarius cordis;
Cruveilhier's p. a nerve p. formed by communications between the dorsal primary rami of the first three cervical nerves; it lies deep to the semispinalis capitis muscle.
deep cardiac p. the deeper part of the cardiac p.p. cardiacus profundus;
deferential p. an autonomic p. on the seminal vesicle and ampulla of the ductus deferens on each side, derived from the inferior hypogastric p.p. deferentialis [NA];
p. deferentia´lis [NA] deferential p
p. denta´lis infe´rior [NA] inferior dental p
p. denta´lis supe´rior [NA] superior dental p
enteric p. the autonomic p. in the wall of the intestine; it consists of three parts, submucosal, myenteric, and subserosal; ganglionic cells are scattered through the myenteric and submucosal plexus.p. entericus [NA];
p. enter´icus [NA] enteric p
esophageal p. one of two nervous p.'s, posterior and anterior on the walls of the esophagus; the first is formed by branches from the right vagus and left recurrent, the second by the anastomosing trunks of the vagus after leaving the pulmonary p.'s; branches supply the mucous and muscular coats of the esophagus.p. esophageus [NA], p. gulae;
p. esopha´geus [NA] esophageal p
Exner's p. a p. formed by tangential nerve fibers in the superficial plexiform or molecular layer of the cerebral cortex.
external carotid p. an autonomic p. formed by the external carotid nerves surrounding the artery of the same name, and giving origin to a number of secondary p.'s along the branches of this artery and to branches to the carotid body.p. caroticus externus [NA];
external iliac p. a lymphatic p. formed by the lymph nodes along the external iliac artery on either side, and their afferent and efferent vessels.p. iliacus externus;
external maxillary p. facial p
facial p. an autonomic p. on the facial artery derived from the external carotid p.; it sends a branch to the submandibular ganglion.external maxillary p., p. maxillaris externus;
femoral p. an autonomic p. surrounding the femoral artery, derived from the iliac p.p. femoralis [NA];
p. femora´lis [NA] femoral p
p. ganglio´sus cilia´ris ciliary ganglionic p
gastric plexuses of autonomic system the p.'s along the greater and lesser curvatures of the stomach derived from the celiac p.; also known as inferior and superior p.p. gastrici systematis autonomici [NA];
p. gas´trici syste´matis autono´mici [NA] gastric plexuses of autonomic system
p. gu´lae esophageal p
Haller's p. a nervous p. of sympathetic filaments and branches of the external laryngeal nerve on the surface of the inferior constrictor muscle of the pharynx.
Heller's p. p. of small arteries in the wall of the intestine.
hemorrhoidal p. rectal venous p See also inferior rectal plexuses, middle rectal plexuses, superior rectal p.
hepatic p. an unpaired autonomic p. lying on the hepatc artery and its branches in the liver.p. hepaticus [NA];
p. hepat´icus [NA] hepatic p
p. hypogas´tricus infe´rior [NA] inferior hypogastric p
p. hypogas´tricus supe´rior [NA] superior hypogastric p
iliac p. the autonomic p. lying on the iliac arteries, derived from the aortic p.p. iliaci [NA];
p. ili´aci [NA] iliac p
p. ili´acus exter´nus external iliac p
inferior dental p. formed by branches of the inferior alveolar nerve interlacing before they supply the teeth; it gives off interior dental branches to the teeth and inferior gingival branches to the gums.p. dentalis inferior [NA];
inferior hemorrhoidal plexuses inferior rectal plexuses
inferior hypogastric p. one of the bilateral autonomic p. in the pelvis distributed to the pelvic viscera; it receives the hypogastric nerves and the pelvic splanchnic nerves.p. hypogastricus inferior [NA], p. pelvinus [NA], pelvic p;
inferior mesenteric p. an autonomic p., derived from the abdominal aortic p., surrounding the inferior mesenteric artery and sending branches to the descending colon, sigmoid, and rectum.p. mesentericus inferior [NA];
inferior rectal plexuses the autonomic p.'s along the anus derived from the inferior hypogastric p.p. rectales inferiores [NA], inferior hemorrhoidal plexuses;
inferior thyroid p. an autonomic p. on the artery of this name, derived from the subclavian p.p. thyroideus inferior;
inferior vesical p. a venous p. in the female corresponding to the prostatic venous p. in the male.p. vesicalis inferior;
inguinal p. a lymphatic p. formed of 10 to 15 lymph nodes with their connecting vessels lying superficially near the termination of the great saphenous vein and more deeply along the femoral artery and vein. See superficial inguinal lymph nodes, under lymph node.p. inguinalis;
p. inguina´lis inguinal p
intermesenteric p. the part of the aortic p. lying between the superior and inferior mesenteric p.'s.p. intermesentericus [NA];
p. intermesenter´icus [NA] intermesenteric p
internal carotid (nervous) p. 1. an autonomic p. surrounding the internal carotid artery in the carotid canal and cavernous sinus, and sending branches to the tympanic p., sphenopalatine ganglion, abducens and oculomotor nerves, the cerebral vessels, and the ciliary ganglion; 2. internal carotid venous p
internal carotid venous p. a venous network around the internal carotid artery in the carotid canal of the temporal bone, connecting with the cavernous sinus and internal jugular vein.p. venosus caroticus internus [NA], internal carotid (nervous) p. (2), p. caroticus internus;
internal mammary p. internal thoracic p
internal maxillary p. periarterial p. of maxillary artery
internal thoracic p. an autonomic p. on the internal thoracic artery derived from the subclavian p.internal mammary p., p. mammarius internus;
internal thoracic lymphatic p. a lymphatic p., including the parasternal; (internal thoracic) lymph nodes, with their vessels, situated along the course of the internal thoracic veins.mammary p., p. mammarius;
intracavernous p. the portion of the internal carotid p. in the cavernous sinus.p. cavernosus, Walther's p;
p. intraparoti´deus [NA] intraparotid p. of facial nerve
intraparotid p. of facial nerve the diverging branches of the facial nerve passing through the substance of the parotid gland, connected by numerous looped anastomoses.p. intraparotideus [NA], pes anserinus (1);
ischiadic p. sacral p
Jacobson's p. tympanic p
Jacques' p. a nerve p. within the muscular coat of the uterine (fallopian) tube.
jugular p. a lymphatic p. which includes the deep cervical group of lymph nodes, with their afferent and efferent vessels, extending along the internal jugular vein. (carotid sheath).p. jugularis;
p. jugula´ris jugular p
Leber's p. a small venous p. in the eye between the venous sinuses of the sclera (of Schlemm) and the spaces of the iridocorneal angle (of Fontana).
p. liena´lis [NA] * official alternate term for splenic p
lingual p. an autonomic p. on the artery of this name, derived from the external carotid p.p. lingualis;
p. lingua´lis lingual p
p. lumba´lis lumbar p
lumbar p. 1. a nervous p., formed by the ventral rami of the first four lumbar nerves; it lies in the substance of the psoas muscle; 2. a lymphatic p. formed of about twenty lymph nodes and connecting vessels situated along the lower portion of the aorta and the common iliac vessels.p. lumbalis;
lumbosacral p. formed by the union of the anterior rami of the lumbar and sacral nerves; it is divided into lumbar and sacral p.'s.p. lumbosacralis [NA];
p. lumbosacra´lis [NA] lumbosacral p
lymphatic p. a p. of lymphatic capillaries, usually without valves, that opens into one or more larger lymphatic vessels.p. lymphaticus [NA];
p. lymphat´icus [NA] lymphatic p
p. mamma´rius internal thoracic lymphatic p
p. mamma´rius inter´nus internal thoracic p
mammary p. internal thoracic lymphatic p
p. maxilla´ris exter´nus facial p
p. maxilla´ris inter´nus periarterial p. of maxillary artery
maxillary p. periarterial p. of maxillary artery
Meissner's p. submucosal p
meningeal p. a nerve p. on the cerebral meninges, derived from the external carotid p.p. meningeus;
p. menin´geus meningeal p
p. mesenter´icus infe´rior [NA] inferior mesenteric p
p. mesenter´icus supe´rior [NA] superior mesenteric p
p. of middle cerebral artery an autonomic p. accompanying the middle cerebral artery, derived from the internal carotid p.p. arteriae cerebri mediae;
middle hemorrhoidal plexuses middle rectal plexuses
middle rectal plexuses the autonomic p.'s along the rectum derived from the inferior hypogastric p.p. rectales medii [NA], middle hemorrhoidal plexuses;
middle sacral p. a lymphatic p. formed of lymph nodes and connecting vessels situated chiefly in the mesorectum anterior and inferior to the sacral promontory.p. sacralis medius;
myenteric p. a p. of unmyelinated fibers and postganglionic autonomic cell bodies lying in the muscular coat of the esophagus, stomach, and intestines; it communicates with the subserous and submucous p.'s, all subdivisions of the enteric p.p. myentericus [NA], Auerbach's p;
p. myenter´icus [NA] myenteric p
nerve p. a p. formed by the interlacing of nerves by means of numerous communicating branches.p. nervosus;
p. nervo´rum spina´lium [NA] p. of spinal nerves
p. nervo´sus nerve p
occipital p. an autonomic p. on the occipital artery derived from the external carotid p.p. occipitalis;
p. occipita´lis occipital p
ophthalmic p. an autonomic p., entering the orbit in company with the ophthalmic artery, derived from the internal carotid p.p. ophthalmicus;
p. ophthal´micus ophthalmic p
ovarian p. an autonomic p. derived from the aortic p. and accompanying the ovarian artery to the ovary, broad ligament, and uterine tube.p. ovaricus [NA];
p. ova´ricus [NA] ovarian p
pampiniform p. a p. formed, in the male, by veins from the testicle and epididymis, consisting of eight or ten veins lying in front of the ductus deferens and forming part of the spermatic cord; in the female the ovarian veins form this p. between the layers of the broad ligament; in the male it is part of the thermoregulatory system of the testis, helping to keep the testis at a constant temperature slightly lower than the other body temperature.p. pampiniformis [NA];
p. pampinifor´mis [NA] pampiniform p
pancreatic p. the autonomic p. that accompanies the pancreatic arteries.p. pancreaticus [NA];
p. pancreat´icus [NA] pancreatic p
pelvic p. inferior hypogastric p
p. pelvi´nus [NA] * official alternate term for inferior hypogastric p
periarterial p. an autonomic p. that accompanies an artery, surrounding it in a network of autonomic nerve fibers.p. periarterialis [NA];
p. periarteria´lis [NA] periarterial p
periarterial p. of maxillary artery an autonomic p. on the maxillary artery derived from the external carotid p.internal maxillary p., maxillary p., p. maxillaris internus;
periarterial p. of vertebral artery a p. of autonomic nerves on the vertebral artery derives from the subclavian p.p. vertebralis [NA], vertebral p;
pharyngeal p. 1. the p. of nerves including branches of the glossopharyngeal, vagus, and accessory nerves (cranial root), that lies along the posterior wall of the pharynx; 2. a venous p. on the posteriolateral walls of the pharynx, emptying through the pharyngeal veins into the internal jugular.p. pharyngeus [NA];
p. pharyn´geus [NA] pharyngeal p
p. pharyn´geus ascen´dens ascending pharyngeal p
phrenic p. , p. phren´icus an autonomic p. surrounding the inferior phrenic artery.
popliteal p. , p. poplit´eus a nerve p. surrounding the popliteal artery, derived from the femoral p.
posterior auricular p. an autonomic p. on the artery of this name, derived from the external carotid p.p. auricularis posterior;
posterior coronary p. the portion of the cardiac p. that accompanies branches of the coronary arteries on the posteroinferior surface of the heart.
prostatic p. an autonomic p. of nerves intimately associated with the capsule of the prostate, derived from the inferior hypogastric p., and giving rise to the cavernous nerves to the erectile tissue of the penis; surgical injury of this plexus ofter results in impotency.p. prostaticus [NA];
prostaticovesical p. a venous p. which includes the prostatic venous plexus around the prostate gland and that of the neck of the bladder; it communicates with the vesical and pudendal p.'s, receives the deep dorsal vein of the penis, and empties. by one or more efferent vessels into the internal iliac (hypogastric) vein; it corresponds to the inferior vesical p. in the female.p. prostaticovesicalis;
p. prostaticovesica´lis prostaticovesical p
p. prostat´icus [NA] prostatic p
prostatic venous p. a venous p., arising chiefly from the dorsal vein of the penis, situated below the base of the bladder at the sides of the prostate. See also prostaticovesical p.p. venosus prostaticus [NA], p. pudendalis, Santorini's labyrinth;
pterygoid p. a venous p. occupying the infratemporal fossa receiving veins accompanying the branches of the maxillary artery, and terminating posteriorly in the maxillary vein; anteriorly the pterygoid plexus drains via the deep facial vein into the facial vein.p. pterygoideus [NA];
p. pterygoi´deus [NA] pterygoid p
p. pudenda´lis prostatic venous p
p. puden´dus nervo´sus pudendal nerve
p. pulmona´lis [NA] pulmonary p
pulmonary p. one of two autonomic p.'s, anterior and posterior, at the hilus of each lung, formed by cardiopulmonary splanchnic nerves of the sympathetic trunk and bronchial branches of the vagus nerve; from them various branches accompany the bronchi and arteries into the lung.p. pulmonalis [NA];
Quénu's hemorrhoidal p. lymphatic p.'s in the skin about the anus.
Ranvier's p. a subbasal stroma p. of the cornea. See stroma p.
rectal plexuses See inferior rectal plexuses, middle rectal plexuses, superior rectal p.
p. recta´les inferio´res [NA] inferior rectal plexuses
p. recta´les me´dii [NA] middle rectal plexuses
p. recta´lis supe´rior [NA] superior rectal p
rectal venous p. a venous p. resting upon the posterior and lateral walls of the rectum; it drains into the superior rectal vein to the portal, the middle rectal to the internal iliac and the inferior rectal to the internal pudendal.p. venosus rectalis [NA], hemorrhoidal p;
Remak's p. submucosal p
renal p. the autonomic p. surrounding the renal artery and extending with it into the substance of the kidney.p. renalis [NA];
p. rena´lis [NA] renal p
sacral p. formed by the fourth and fifth lumbar (lumbosacral trunk) and first, second, and third sacral nerves; it lies on the inner surface of the posterior wall of the pelvis usually embedded in the piriformis muscle; its nerves supply the lower limbs, its major product being the sciatic nerve.p. sacralis [NA], ischiadic p., sciatic p;
p. sacra´lis [NA] sacral p
p. sacra´lis me´dius middle sacral p
sacral venous p. a venous p. on the pelvic surface of the sacrum, formed by tributaries to the lateral sacral veins.p. venosus sacralis [NA];
Santorini's p. venous p. on ventral and lateral prostatic surfaces.
Sappey's p. a network of lymphatics in the areola of the nipple.
sciatic p. sacral p
solar p. celiac (nervous) p
spermatic p. testicular p
p. of spinal nerves an intermingling of fiber fascicles from adjacent spinal nerves to form a network; the major p.'s are the cervical, brachial, and lumbosacral.p. nervorum spinalium [NA];
splenic p. the p. of autonomic nerves along the splenic artery.p. lienalis [NA], p. splenicus;
p. sple´nicus splenic p
Stensen's p. the venous network surrounding the parotid (Stensen's) duct.
stroma p. a p. of nerves in the parenchyma of the cornea consisting of the primary or deep p., in the substance of the cornea, and the subbasal or superficial p. just beneath the anterior limiting membrane.
subclavian p. subclavian periarterial p
subclavian periarterial p. the autonomic p. accompanying the artery of this name, formed by fibers from the stellate ganglion, and giving off secondary p.'s along the branches of the subclavian.p. subclavius [NA], subclavian p;
p. subcla´vius [NA] subclavian periarterial p
submucosal p. a gangliated p. of unmyelinated nerve fibers, derived chiefly from the superior mesenteric p., ramifying in the intestinal submucosa.p. submucosus [NA], Meissner's p., Remak's p;
p. submuco´sus [NA] submucosal p
suboccipital venous p. the extensive p. of veins in the suboccipital region.p. venosus suboccipitalis [NA];
p. subsero´sus [NA] subserous p
subserous p. the subserous part of the enteric plexus of autonomic nerves.p. subserosus [NA];
superficial cardiac p. the superficial and smaller subdivision of the cardiac p., formed by the left superior cardiac nerves from the left vagus and cervical sympathetic trunk; it is found beneath the aortic arch, between the arch and the bifurcation of the pulmonary trunk.p. cardiacus superficialis;
superficial temporal p. an autonomic p. of nerves on the artery of this name, derived from the external carotid p.p. temporalis superficialis;
superior dental p. formed by branches of the infraorbital nerve, it gives off superior dental branches to the upper and superior gingival branches to the gums.p. dentalis superior [NA];
superior hemorrhoidal p. superior rectal p
superior hypogastric p. the continuation of the aortic p. inferior to the aortic bifurcation across the fifth lumbar vertebra into the pelvis where it divides into two hypogastric nerves at the sides of the rectum; these join the pelvic splanchnic nerves to form the inferior hypogastric p.'s supplying pelvic viscera.p. hypogastricus superior [NA], nervus presacralis [NA], Latarget's nerve (1), presacral nerve;
superior mesenteric p. an autonomic p., a continuation of the abdominal aortic p., sending nerves to the intestines and forming with the vagus the subserous, myenteric, and submucous p.'s; this periarterial plexus is so dense that it results in the appearance of a characteristic perivascular "collar" distinguishing the superior mesenteric artery from the superior mesenteric vein in several imaging modalities such as with ultra sound.p. mesentericus superior [NA];
superior rectal p. the autonomic p. derived as a continuation of the inferior mesenteric p. that accompanies the superior rectal artery.p. rectalis superior [NA], superior hemorrhoidal p;
superior thyroid p. an autonomic p. on the artery of the same name, derived from the external carotid p.p. thyroideus superior;
suprarenal p. an autonomic p. formed mainly by branches from the celiac ganglion, lying at the hilus of the suprarenal gland.p. suprarenalis [NA];
p. suprarena´lis [NA] suprarenal p
sympathetic plexuses autonomic plexuses, in which postsynaptic sympathetic nerve fibers are predominant.
p. tempora´lis superficia´lis superficial temporal p
testicular p. the autonomic p. derived from the aortic p. and accompanying the testicular artery.p. testicularis [NA], spermatic p;
p. testicula´ris [NA] testicular p
thoracic aortic p. an autonomic p. surrounding the thoracic aorta and passing with it through the aortic opening in the diaphragm, to become continuous with the abdominal aortic p.p. aorticus thoracicus [NA];
p. thyroi´deus im´par [NA] a venous p. in front of the lower portion of the trachea formed by anastomoses between the inferior laryngeal veins and veins emerging from the caudal border of the thyroid; it terminates in the unpaired inferior thyroid vein.
p. thyroi´deus infe´rior inferior thyroid p
p. thyroi´deus supe´rior superior thyroid p
tympanic p. a p. on the promontory of the labyrinthine wall of the tympanic cavity, formed by the tympanic nerve, an anastomotic branch of the facial, and sympathetic branches from the internal carotid p.; it supplies the mucosa of the middle ear, mastoid cells, and auditory (eustachian) tube, and gives off the lesser superficial petrosal nerve to the otic ganglion.p. tympanicus [NA], Jacobson's p;
p. tympan´icus [NA] tympanic p
ureteric p. the autonomic p. derived from the celiac p. that accompanies the ureter.p. uretericus [NA];
p. ureter´icus [NA] ureteric p
uterine venous p. the plexiform veins that lie along the sides of the uterus in the broad ligament.p. venosus uterinus [NA];
uterovaginal p. a gangliated autonomic p. on each side of the cervix of the uterus, derived from the inferior hypogastric p.p. uterovaginalis [NA], Frankenhäuser's ganglion, Lee's ganglion;
p. uterovagina´lis [NA] uterovaginal p
vaginal venous p. the p. of veins that surrounds the vagina.p. venosus vaginalis [NA];
vascular p. a vascular network formed by frequent anastomoses between the blood vessels (arteries or veins) of a part.p. vasculosus [NA];
p. vasculo´sus [NA] vascular p
p. veno´sus [NA] venous p
p. veno´sus areola´ris [NA] areolar venous p
p. veno´sus cana´lis hypoglos´si [NA] venous p. of hypoglossal canal
p. veno´sus carot´icus inter´nus [NA] internal carotid venous p
p. veno´sus foram´inis ova´lis [NA] venous p. of foramen ovale
p. veno´sus prostat´icus [NA] prostatic venous p
p. veno´sus recta´lis [NA] rectal venous p
p. veno´sus sacra´lis [NA] sacral venous p
p. veno´sus suboccipita´lis [NA] suboccipital venous p
p. veno´sus uteri´nus [NA] uterine venous p
p. veno´sus vagina´lis [NA] vaginal venous p
p. veno´sus vertebra´lis [NA] vertebral venous system
p. veno´sus vesica´lis [NA] vesicular venous p
venous p. a vascular network formed by numerous anastomoses between veins.p. venosus [NA];
venous p. of bladder vesicular venous p
venous p. of foramen ovale a venous network around the mandibular nerve connecting the cavernous sinus and the pterygoid p.p. venosus foraminis ovalis [NA], rete foraminis ovalis;
venous p. of hypoglossal canal a small venous network around the hypoglossal nerve, connecting with the occipital sinus, inferior petrosal sinus, and internal jugular vein.p. venosus canalis hypoglossi [NA], circellus venosus hypoglossi, rete canalis hypoglossi;
vertebral p. periarterial p. of vertebral artery
p. vertebra´lis [NA] periarterial p. of vertebral artery
vertebral venous p. vertebral venous system
vesical p. an autonomic p. on the bladder, derived from the inferior hypogastric p.p. vesicalis [NA];
p. vesica´lis [NA] vesical p
p. vesica´lis infe´rior inferior vesical p
vesicular venous p. a p. of veins around the fundus and sides of the bladder.p. venosus vesicalis [NA], venous p. of bladder;
Walther's p. intracavernous p

 

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