| triangular ligaments of liver | See: right triangular ligament, left triangular ligament. (05 Mar 2000) |
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| triangular muscle | <anatomy> A muscle that is triangular in shape. Synonym: musculus triangularis. Synonym: depressor anguli oris muscle. (05 Mar 2000) |
| 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) |
| aditus pelvis | The upper opening of the true pelvis, bounded anteriorly by the pubic symphysis and the pubic crest on either side, laterally by the iliopectineal lines, and posteriorly by the promontory of the sacrum. Synonym: apertura pelvis superior, aditus pelvis, first parallel pelvic plane, pelvic brim, pelvic inlet, pelvic plane of inlet, plane of inlet. (05 Mar 2000) |
| android pelvis | A masculine or funnel-shaped pelvis. (05 Mar 2000) |
| anthropoid pelvis | An apelike pelvis, with a long anteroposterior diameter and a narrow transverse diameter. (05 Mar 2000) |
| apertura pelvis inferior | The lower opening of the true pelvis, bounded anteriorly by the pubic arch, laterally by the rami of the ischium and the sacrotuberous ligament on either side, and posteriorly by these ligaments and the tip of the coccyx. Synonym: apertura pelvis inferior, apertura pelvis minoris, fourth parallel pelvic plane, pelvic outlet, pelvic plane of outlet, plane of outlet. (05 Mar 2000) |
| apertura pelvis minoris | The lower opening of the true pelvis, bounded anteriorly by the pubic arch, laterally by the rami of the ischium and the sacrotuberous ligament on either side, and posteriorly by these ligaments and the tip of the coccyx. Synonym: apertura pelvis inferior, apertura pelvis minoris, fourth parallel pelvic plane, pelvic outlet, pelvic plane of outlet, plane of outlet. (05 Mar 2000) |
| apertura pelvis superior | The upper opening of the true pelvis, bounded anteriorly by the pubic symphysis and the pubic crest on either side, laterally by the iliopectineal lines, and posteriorly by the promontory of the sacrum. Synonym: apertura pelvis superior, aditus pelvis, first parallel pelvic plane, pelvic brim, pelvic inlet, pelvic plane of inlet, plane of inlet. (05 Mar 2000) |