papillary muscle

papillary muscle

noun Anatomy.

  1. one of the small bundles of muscles attached to the ventricle walls and to the chordae tendineae that tighten these tendons during ventricular contraction.


  1. Any of the group of myocardial bundles that terminate in the tendinous cords that attach to the cusps of the atrioventricular valves.

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