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papillary muscle
Thesaurus| Noun | 1. | papillary muscle - any of several muscles associated with the atrioventricular valves; "the papillary muscles contract during systole to prevent regurgitation of blood into the atria"cardiac muscle, heart muscle - the muscle tissue of the heart; adapted to continued rhythmic contractionatrioventricular valve - either of two heart valves through which blood flows from the atria to the ventricles; prevents return of blood to the atrium |
papillary muscle
papillary muscle[′pap·ə‚ler·ē ′məs·əl] (anatomy) Any of the muscular eminences in the ventricles of the heart from which the chordae tendineae arise. papillary muscle
pap·il·lar·y mus·cle [TA] one of the group of myocardial bundles that terminate in the chordae tendineae that attach to the cusps of the atrioventricular valves; each ventricle has an anterior and a posterior papillary muscle; the right ventricle sometimes has a septal papillary muscle. Synonym(s): musculus papillaris cordis [TA]pap·il·lar·y mus·cle (pap'i-lar-ē mŭs'ĕl) [TA] One of the group of myocardial bundles that terminate in the chordae tendineae that attach to the cusps of the atrioventricular valves; each has an anterior and a posterior papillary muscle; the right ventricle sometimes has a septal papillary muscle.
Synonym(s): musculus papillaris [TA] . papillary muscleInternal conical heart muscles. Origin: ventricular wall. Insertion: tricuspid and mitral valve leaflets via chordae tendinae. Action: anchor leaflets of valves during heart contractions. See also: musclepapillary muscle
Related to papillary muscle: Moderator band, Trabeculae carneae, Trabeculæ carneæWords related to papillary musclenoun any of several muscles associated with the atrioventricular valvesRelated Words- cardiac muscle
- heart muscle
- atrioventricular valve
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