| TS | triangularis sterni |
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| musculus triangularis sterni | <anatomy, muscle> Origin, dorsal surface of xiphoid cartilage and lower portion of dorsal surface of body of sternum; insertion, second to sixth costal cartilages; action, contributes to depression of ribs, narrowing chest; nerve supply, intercostal. Synonym: musculus transversus thoracis, musculus triangularis sterni, sternocostalis muscle, transverse muscle of thorax. (05 Mar 2000) |
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| musculus triangularis | Synonym: triangular muscle. Synonym: depressor anguli oris muscle. (05 Mar 2000) |
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| musculus triangularis labii inferioris | <anatomy, muscle> Origin, lower border of mandible anteriorly; insertion, blends with other muscles in lower lip near angle of mouth; action, pulls down corners of mouth; nerve supply, facial. Synonym: musculus depressor anguli oris, musculus triangularis labii inferioris, musculus triangularis, triangular muscle. (05 Mar 2000) |
| musculus triangularis labii superioris | <anatomy, muscle> Origin, canine fossa of maxilla; insertion, orbicularis oris and skin at angle of mouth; action, raises angle of mouth; nerve supply, facial. Synonym: musculus levator anguli oris, musculus caninus, musculus triangularis labii superioris. (05 Mar 2000) |
| angulus sterni | The angle between the manubrium and the body of the sternum at the manubriosternal junction. Marks the level of the second costal cartilage (rib) for counting ribs or intercostal spaces. Denotes level of aortic arch, bifurcation of trachea, and T4/T5 intervertebral disc. Synonym: angulus sterni, Louis' angle, Ludwig's angle, manubriosternal junction. (05 Mar 2000) |
| manubrium sterni | The upper segment of the sternum, a flattened, roughly triangular bone, occasionally fused with the body of the sternum, forming with it a slight angle, the sternal angle. Synonym: manubrium sterni, episternum, presternum. (05 Mar 2000) |
| membrana sterni | Interlacing fibres from the anterior costosternal ligaments covering the anterior surface of the sternum. Synonym: membrana sterni. (05 Mar 2000) |
| mucro sterni | <anatomy> Composed of cartilage at the inferior aspect of the sternal body. (27 Sep 1997) |
| corpus sterni | The middle and largest portion of the sternum, lying between the manubrium superiorly and the xiphoid process inferiorly. Synonym: corpus sterni, gladiolus, mesosternum, midsternum. (05 Mar 2000) |
| alopecia triangularis | Bilateral receding temporal hair lines in male pattern alopecia. (05 Mar 2000) |
| alopecia triangularis congenitalis | A congenital triangular patch of baldness on the frontal or temporal region of the scalp. (05 Mar 2000) |
| recessus triangularis | 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) |
| pars triangularis | 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) |
| plica triangularis | A fold of mucous membrane anterior to the palatine tonsil arising from the palatoglossal arch. Synonym: plica triangularis. (05 Mar 2000) |
| crista triangularis | 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) |
| eminentia fossae triangularis auricularis | <anatomy> The prominence on the cranial surface of the auricle corresponding to the triangular fossa. Synonym: eminentia fossae triangularis auricularis, agger perpendicularis, eminentia triangularis. (05 Mar 2000) |
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