Medical Term:

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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Examples: glitazone, GI cocktail, etc.

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