papillary muscle

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Related to musculus papillaris: Papillary muscles

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 muscle

Internal 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: muscle
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