Papillary muscle

Small muscles within the heart that anchor 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.

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papillary muscle n one of the small muscular columns attached at one end to the chordae tendineae and at the other to the wall of the ventricle and that maintain tension on the chordae tendineae as the ventricle contracts

Medical dictionary. 2011.

Look at other dictionaries:

  • Papillary muscle — Interior of right side of heart. Papillary muscles labeled in purple …   Wikipedia

  • papillary muscle — noun any of several muscles associated with the atrioventricular valves the papillary muscles contract during systole to prevent regurgitation of blood into the atria • Hypernyms: ↑cardiac muscle, ↑heart muscle • Part Holonyms: ↑atrioventricular… …   Useful english dictionary

  • papillary muscle — Anat. one of the small bundles of muscles attached to the ventricle walls and to the chordae tendineae that tighten these tendons during ventricular contraction. [1885 90] * * * …   Universalium

  • papillary muscle of conus arteriosus — a septal papillary muscle arising near the septal end of the supraventricular crest and attached to the anterior and septal cusps of the tricuspid valve …   Medical dictionary

  • papillary muscle of left ventricle anterior — musculus papillaris anterior ventriculi sinistri …   Medical dictionary

  • papillary muscle of left ventricle posterior — musculus papillaris posterior ventriculi sinistri …   Medical dictionary

  • papillary muscle of right ventricle anterior — musculus papillaris anterior ventriculi dextri …   Medical dictionary

  • papillary muscle of right ventricle posterior — musculus papillaris posterior ventriculi dextri …   Medical dictionary

  • Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… …   Medical dictionary

  • Muscle, papillary — Small muscles within the heart that anchor 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… …   Medical dictionary

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