papillary muscle

(redirected from musculus papillaris cordis)
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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]

papillary muscle

any one of the rounded or conical muscular projections attached to the chordae tendineae in the ventricles of the heart. The papillary muscles vary in number. The two main muscles are the anterior papillary muscle and the posterior papillary muscle. The papillary muscles are associated with the atrioventricular valves that they help open and close. Compare chordae tendineae, trabecula carnea.

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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