papillary muscle

noun Anatomy.

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

Origin of papillary muscle

First recorded in 1885–90

Words nearby papillary muscle

papillary cystadenoma, papillary cystadenoma lymphomatosum, papillary cystic adenoma, papillary duct, papillary hidradenoma, papillary muscle, papillary stasis, papillary tumor, papillectomy, papilledema, papilliform

Medical definitions for papillary muscle

papillary muscle

n.

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