Definition of Papillary muscle
Papillary muscle: A small muscle within the heart that anchors the heart valves. The anchor ropes are the chordae tendineae, thread-like bands of fibrous tissue that attach on one end to the edges of the tricuspid and mitral valves of the heart and on the other end to the papillary muscles.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=4755
Last Editorial Review: 3/30/2012
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