| triangular muscle | <anatomy> A muscle that is triangular in shape. Synonym: musculus triangularis. Synonym: depressor anguli oris muscle. (05 Mar 2000) |
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| triangular nucleus | Alternative term for the medial vestibular nucleus. (05 Mar 2000) |
| triangular part | The middle one of three small convolutions which together compose the inferior frontal gyrus of the cerebral cortex; the other two being the orbital part and opercular part. Synonym: pars triangularis. (05 Mar 2000) |
| triangular pit of arytenoid cartilage | A deep depression in the upper portion of the anterolateral surface of the arytenoid cartilage, lodging glands. Synonym: fovea triangularis cartilaginis arytenoideae, triangular pit of arytenoid cartilage. (05 Mar 2000) |
| triangular recess | An occasional evagination of the anterior wall of the third ventricle of the brain between the anterior commissure and the diverging pillars of the fornix. Synonym: recessus triangularis. (05 Mar 2000) |
| triangular ridge | A crest or ridge which extends from the apex of a cusp of a premolar or molar tooth toward the central part of the occlusal surface. Synonym: triangular crest, triangular ridge. (05 Mar 2000) |
| triangular uterus | Uterus bicornis in which the fundus between the two cornua is broad and flat. Synonym: triangular uterus, uterus incudiformis, uterus triangularis. (05 Mar 2000) |
| left triangular ligament | <anatomy> A triangular fold of fibrous connective tissue and peritoneum that extends from the left lobe of the liver to the diaphragm. Synonym: ligamentum triangulare sinistrum. (05 Mar 2000) |
| acetabular fossa | A depressed area in the floor of the acetabulum superior to the acetabular notch. Synonym: fossa acetabuli. (05 Mar 2000) |
| amygdaloid fossa | The depression between the palatoglossal and palatopharyngeal arches occupied by the palatine tonsil. Synonym: fossa tonsillaris, amygdaloid fossa, sinus tonsillaris. (05 Mar 2000) |
| anconal fossa | A hollow on the dorsum of the distal end of the humerus, just above the trochlea, in which the olecranon process of the ulna rests when the elbow is extended. Synonym: fossa olecrani, anconal fossa. (05 Mar 2000) |
| anterior cranial fossa | The portion of the internal base of the skull, anterior to the sphenoidal ridges and limbus, in which the frontal lobes of the brain rest. Synonym: fossa cranii anterior, anterior cranial base. (05 Mar 2000) |
| articular fossa of temporal bone | A deep hollow in the squamous portion of the temporal bone at the root of the zygoma, in which rests the condyle of the mandible. Synonym: cavitas glenoidalis, fossa mandibularis, articular fossa of temporal bone, glenoid cavity, glenoid fossa, glenoid surface. (05 Mar 2000) |
| axillary fossa | <anatomy> The underarm area. (16 Dec 1997) |
| Bichat's fossa | Sphenomaxillary fossa, a small pyramidal space, housing the pterygopalatine ganglion, between the pterygoid process, the maxilla, and the palatine bone. Synonym: fossa pterygopalatina, Bichat's fossa, pterygomaxillary fossa, sphenomaxillary fossa. (05 Mar 2000) |