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depressor labii inferioris (muscle)


Definition: facial muscle of mouth; origin, anterior portion of base of mandible; insertion, interdigitates with fibers of orbicularis oris musculus to reach skin of lower lip; action, depresses lower lip; nerve supply, facial.

Synonym(s): musculus depressor labii inferiorisTA, depressor muscle of lower lip, musculus quadratus labii inferioris, musculus quadratus menti

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.