genioglossus

[ jē′nē-ō-glŏsəs ]

n.

Either of a pair of lingual muscles with origin in the mandible, with insertion to the lingual fascia below the mucous membrane and epiglottis, with nerve supply from the hypoglossal nerve, and whose action depresses and protrudes the tongue.

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