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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.


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Word History and Origins

Origin of papillary muscle1

First recorded in 1885–90
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Example Sentences

These patches are especially common in the papillary muscles of the mitral valve—a fact which explains the occasional presence of systolic murmurs in typhoid fever.

M., contraction of the papillary muscles; Car., carotid pulse.

These were probably due to irregularity in the action of the papillary muscles as a consequence of the fatigue.

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