greater zygomatic muscle

Medical Dictionary

greater zygomatic muscle n.
A muscle with origin from the zygomatic bone anterior to the temporozygomatic suture, with insertion into the muscles at the angle of the mouth, with nerve supply from the facial nerve, and whose action draws the upper lip up and to the side.

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