serratus posterior inferior

[ sə-rātəs ]

n.

A muscle with origin from the two lower thoracic and two upper lumbar vertebrae, with insertion into the last four ribs, with nerve supply from the ninth to the twelfth intercostal nerves, and whose action draws the lower ribs backward and downward.

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Words nearby serratus posterior inferior

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.