depressor muscle of angle of mouth


Also found in: Dictionary, Thesaurus, Encyclopedia.

depressor muscle of angle of mouth

n.
A muscle with origin from the lower border of the mandible, with insertion near the angle of the mouth, with nerve supply from the facial nerve, and whose action pulls down the corners of the mouth. Also called triangular muscle.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.