| thoracic cavity | The space within the thoracic walls, bounded below by the diaphragm and above by the neck. Synonym: cavitas thoracis, cavum thoracis. (05 Mar 2000) |
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| ectoplacental cavity | A developmental cavity that exists in some mammals and is derived by division of the proamniotic space; it is further removed from the embryo than the amniotic cavity in some mammals. Synonym: ectoplacental cavity. (05 Mar 2000) |
| ectotrophoblastic cavity | A developmental cavity appearing between the trophoblast and the embryonic disk ectoderm in some mammals. (05 Mar 2000) |
| epamniotic cavity | A developmental cavity that exists in some mammals and is derived by division of the proamniotic space; it is further removed from the embryo than the amniotic cavity in some mammals. Synonym: ectoplacental cavity. (05 Mar 2000) |
| epidural cavity | The space between the walls of the vertebral canal and the dura mater of the spinal cord. Synonym: cavum epidurale, epidural space. (05 Mar 2000) |
| trigeminal cavity | The cleft in the meningeal layer of dura of the middle cranial fossa near the tip of the petrous part of the temporal bone; it encloses the roots of the trigeminal nerve and the trigeminal ganglion. Synonym: cavum trigeminale, Meckel's cavity, Meckel's space, trigeminal cavity. (05 Mar 2000) |
| uterine cavity | Cavity of uterus, the space within the uterus extending from the cervical canal to the openings of the uterine tubes. Synonym: cavitas uteri, cavum uteri. (05 Mar 2000) |
| lesser peritoneal cavity | <anatomy> An isolated portion of the peritoneal cavity lying dorsal to the stomach and extending craniad to the liver and diaphragm and caudad into the greater omentum; it opens into the general peritoneal cavity at the epiploic foramen. Synonym: bursa omentalis, lesser peritoneal cavity, lesser peritoneal sac, omental sac. (05 Mar 2000) |