intercostal muscle

intercostal muscle

noun
muscles between the ribs; they contract during inspiration [syn: intercostal
WordNet® 3.0, © 2006 by Princeton University.
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Encyclopedia Britannica
Encyclopedia

intercostal muscle

in human physiology, any of a series of short muscles that extend between the ribs and serve to draw them together during inspiration and forced expiration or expulsive actions. A set of external and internal intercostalis muscles is found between each vertical pair of ribs on each side of the chest

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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