Terminology Service for NFDI4Health
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papillary muscle of heart

Go to external page http://purl.obolibrary.org/obo/UBERON_0002494

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 [ http://www.informatics.jax.org/accession/anna ]

Term info

Label

papillary muscle of heart

Synonyms
  • papillary muscle
  • papillary muscle of ventricle
  • ventricular papillary muscle
  • ventricule papillary muscle
database cross reference
Subsets

uberon_slim, pheno_slim

depicted by

http://purl.obolibrary.org/obo/Papillary_muscles.png

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]

id

UBERON:0002494