one of the group of myocardial bundles which 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 [ MP:0004058 ]

Synonyms: papillary muscle ventricule papillary muscle papillary muscle of ventricle ventricular papillary muscle

This is just here as a test because I lose it

Term information

database cross reference

uberon_slim, pheno_slim

depicted by


function notes

These muscles contract to tighten the chordae tendineae, which in turn prevent inversion. This occurs in response to pressure gradients. Instead they brace the valves against the high pressure, preventing regurgitation of ventricular blood back into the atrial cavities.[Wikipedia:Papillary_muscle]

has related synonym

musculus papillaris

homology notes

On the internal or parietal surface of the left ventricle in man and in mammals are two papillary muscles, which are almost identical and well developed.[well established][VHOG]