cavity (kav´i-te)

1. A hollow space. A hollow, hole, or cavity. See cave, cavity, cavitas, cavern, cavern. 2. Lay term for the loss of tooth structure due to dental caries.cavum [NA] , cavitas; [L. cavus, hollow]
abdominal c. the space bounded by the abdominal walls, the diaphragm, and the pelvis; it usually is arbitrarily separated from the pelvic cavity by a plane across the superior aperture of the pelvis; however, it may include the pelvis with the abdomen (see abdominopelvic c.); within the c. lie the greater part of the organs of digestion, the spleen, the kidneys, and the suprarenal glands.cavitas abdominalis [NA] , cavum abdominis, enterocele (2);
abdominopelvic c. abdominal c. plus pelvic c.
amniotic c. the fluid-filled c. inside the amnion which contains the developing embryo.
articular c. a joint cavity, the potential space bounded by the synovial membrane and articular cartilages of all synovial joints. Normally, the articular c. contains only sufficient synovial fluid to lubricate the internal surfaces.cavitas articularis [NA] , cavum articulare;
axillary c. axilla
body c. the collective visceral c. of the trunk (thoracic c. plus abdominopelvic c.), bounded by the superior thoracic aperture above, the pelvic floor below, and the body walls (parietes) in between.celom (2) , celoma, coelom;
buccal c. oral vestibule
cleavage c. blastocele
c. of concha the space within the lower, larger portion of the concha below the crus helicis; it forms the vestibule leading into the external acoustic meatus.cavum conchae [NA];
c.'s of corpora cavernosa caverns of corpora cavernosa, under cavern
c.'s of corpus spongiosum caverns of corpus spongiosum, under cavern
cotyloid c. acetabulum
cranial c. the space within the skull occupied by the brain, its coverings, and cerebrospinal fluid.intracranial c;
crown c. the space within the crown of a tooth continuous with the root canal.cavitas coronalis [NA] , cavum coronale;
ectoplacental c. epamniotic c
ectotrophoblastic c. a developmental c. appearing between the trophoblast and the embryonic disk ectoderm in some mammals.
epamniotic c. a developmental c. that exists in some mammals and is derived by division of the proamniotic space; it is further removed from the embryo than the amniotic c. in some mammals.ectoplacental c;
epidural c. the space between the walls of the vertebral canal and the dura mater of the spinal cord.cavum epidurale [NA] , epidural space;
glenoid c. mandibular fossa
greater peritoneal c. peritoneal c
head c. the cephalic region in the embryos of vertebrates containing the modified somites that give rise to the extrinsic eye muscles.
idiopathic bone c. solitary bone cyst
inferior laryngeal c. infraglottic c
infraglottic c. the part of the cavity of the larynx immediately below the glottis.cavitas infraglotticum [NA] , aditus glottidis inferior, cavum infraglotticum, inferior laryngeal c., infraglottic space;
intermediate laryngeal c. portion of the c. of the larynx between the vestibular and vocal folds, with which the ventricles communicate.aditus glottidis superior;
intracranial c. cranial c
c. of larynx a cavity that is continuous above with the pharynx at the level of the aryepiglottic folds and extends downward through the rima glottidis to the infraglottic space.cavitas laryngis [NA] , cavum laryngis;
lesser peritoneal c. omental bursa
Meckel's c. trigeminal cave
medullary c. the marrow cavity in the shaft of a long bone.cavitas medullaris [NA] , cavum medullare;
c. of middle ear tympanic c
nasal c. the cavity on either side of the nasal septum, lined with ciliated respiratory mucosa, extending from the naris anteriorly to the choana posteriorly, and communicating with the paranasal sinuses through their orifices in the lateral wall, from which also project the three conchae; the cribriform plate, through which the olfactory nerves are transmitted, forms the roof; the floor is formed by the hard palate.cavitas nasi [NA] , cavum nasi;
nephrotomic c. nephrocele (2)
oral c. the region consisting of the vestibulum oris, the narrow cleft between the lips and cheeks, and the teeth and gums, and the c. oris propria.cavitas oris [NA] , cavum oris, mouth (1);
oral c. proper the space between the dental arches, limited posteriorly by the isthmus of the fauces (palatoglossal arch).cavitas oris propria;
orbital c. orbit
pelvic c. the space bounded at the sides by the bones of the pelvis, above by the superior aperture of the pelvis, and below by the pelvic diaphragm; it contains the pelvic viscera.cavitas pelvis [NA] , cavum pelvis;
pericardial c. 1. the potential space between the parietal and the visceral layers of the serous pericardium; 2. in the embryo, that part of the primary celom containing the heart; originally it is in open communication with the pericardioperitoneal c.'s and indirectly, through them, with the peritoneal part of the celom.cavitas pericardialis [NA] , cavum pericardii;
peritoneal c. the interior of the peritoneal sac, normally only a potential space between the parietal and visceral layers of the peritoneum.cavitas peritonealis [NA] , cavum peritonei, greater peritoneal c;
perivisceral c. the space between the ectoderm and endoderm in the gastrula.primitive perivisceral c;
pharyngonasal c. nasopharynx
c. of pharynx it consists of a nasal part (nasopharynx) continuous anteriorly with the nasal cavity and receiving the openings of the auditory tubes, an oral part (oropharynx) opening through the fauces into the oral cavity, and a laryngeal part (laryngopharynx) leading into the vestibule of the larynx and to the esophagus.cavitas pharyngis [NA] , cavum pharyngis;
pleural c. the potential space between the parietal and visceral layers of the pleura.cavitas pleuralis [NA] , cavum pleurae, pleural space;
pleuroperitoneal c. that part of the embryonic celom later partitioned to give rise to the pleural and peritoneal c.'s.
primitive perivisceral c. perivisceral c
pulmonary c. the portion of the thoracic c. lying on either side of the mediastinum and occupied by a lung; the space existing when a lung is removed.
pulp c. the central hollow of a tooth consisting of the crown cavity and the root canal; it contains the fibrovascular dental pulp and is lined throughout by odontoblasts.cavitas dentis [NA] , c. of tooth, cavum dentis;
Retzius' c. retropubic space [A.A. Retzius]
segmentation c. blastocele
c. of septum pellucidum a slitlike, fluid-filled space of variable width between the left and right transparent septum, which occurs in less than 10% of human brains and may communicate with the third ventricle.cavum septi pellucidi [NA] , Duncan's ventricle, fifth ventricle, pseudocele, pseudoventricle, sylvian ventricle, ventricle of Sylvius, ventriculus quintus, Vieussens' ventricle, Wenzel's ventricle;
somite c. myocele (2)
splanchnic c. the celom or one of the body c.'s derived from it.visceral c;
subarachnoid c. subarachnoid space
subdural c. subdural space
subgerminal c. primitive gut
superior laryngeal c. vestibule of larynx
thoracic c. the space within the thoracic walls, bounded below by the diaphragm and above by the neck.cavitas thoracis [NA] , cavum thoracis;
c. of tooth pulp c
trigeminal c. trigeminal cave
tympanic c. an air chamber in the temporal bone containing the ossicles; it is lined with mucous membrane and is continuous with the auditory tube anteriorly and the tympanic antrum and mastoid air cells posteriorly.cavitas tympanica [NA] , c. of middle ear, cavum tympani, tympanum;
uterine c. , c. of uterus the space within the uterus extending from the cervical canal to the openings of the uterine tubes.cavitas uteri [NA] , cavum uteri;
visceral c. splanchnic c


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