chin muscle

chin muscle definition - medical

chin muscle

noun
A muscle with origin from the incisor fossa of the mandible, with insertion into the skin of the chin, with nerve supply from the facial nerve, and whose action raises and wrinkles the skin of the chin and pushes up the lower lip.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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