| 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) |
| tympanic cavity | 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. Synonym: cavitas tympanica, cavity of middle ear, cavum tympani, tympanum. (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) |
| floor of tympanic cavity | The floor of the tympanic cavity; a thin plate of bone separating the tympanic cavity from the jugular fossa. Synonym: paries jugularis cavi tympani, fundus tympani, inferior wall of tympanic cavity, jugular wall of middle ear. (05 Mar 2000) |
| lateral wall of tympanic cavity | The wall formed mainly by the tympanic membrane. Synonym: paries membranaceus cavi tympani, lateral wall of middle ear, membranous wall of middle ear. (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) |
| acromioclavicular joint | The joint formed by the acromion of the scapula and the acromial extremity of the clavicle. (12 Dec 1998) |
| ankle joint | The joint that is formed by the inferior articular and malleolar articular surfaces of the tibia, the malleolar articular surface of the fibula, and the medial malleolar, lateral malleolar, and superior surfaces of the talus. (12 Dec 1998) |
| anterior intraoccipital joint | Cartilaginous union in the newborn between the lateral and the basilar portions of the occipital bone. Synonym: synchondrosis intraoccipitalis anterior, anterior intraoccipital joint. (05 Mar 2000) |
| arthrodial joint | A synovial joint in which the opposing surfaces are nearly planes and in which there is only a slight, gliding motion, as in the intermetacarpal joints. Synonym: articulatio plana, arthrodia, arthrodial articulation, arthrodial joint, gliding joint. (05 Mar 2000) |
| articular disc of acromioclavicular joint | The articular disk of fibrocartilage usually found between the acromial end of the clavicle and the medial border of the acromion. Synonym: discus articularis acromioclavicularis, acromioclavicular disk, Weitbrecht's cartilage. (05 Mar 2000) |
| articular disc of distal radioulnar joint | The disk that holds together the distal ends of the radius and ulna; it is attached by its apex to a depression between the styloid process and distal surface of the head of the ulna, and by its base to the ridge separating the ulnar notch from the carpal surface of the radius. Synonym: discus articularis radioulnaris, radioulnar disk, radioulnar articular disk, triangular cartilage, triangular disk of wrist, triquetrous cartilage. (05 Mar 2000) |