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Papillary muscle


noun, plural: papillary muscles

A conical projection attached to the chordae tendineae which anchors the heart valves.


Its contraction during systole pulls the chordae tendineae, thereby preventing the backflow of blood from the ventricles into the atriums.

Word origin: papillary + muscle

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Skin, muscles and joints

... cells that produce keratin, for other layers. The dermis consists of papillary and reticular regions. The papillary region is composed of areolar ... There is no such thing as subcutaneous glands. Most skeletal muscles are found in _______ pairs, meaning that as one ________, the other ...

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by clarence
Thu May 26, 2005 10:28 am
Forum: Human Biology
Topic: Skin, muscles and joints
Replies: 15
Views: 12425

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