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smaller pectoral muscle

smaller pectoral muscle in Medicine

smaller pectoral muscle n.
A muscle with origin from the third to the fifth ribs, with insertion into the coracoid process of the scapula, with nerve supply from the anterior thoracic nerve, and whose action lowers the scapula or raises the ribs.

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