depressor labii inferioris muscle


de·pres·sor la·bi·i in·fe·ri·o·ris mus·cle

(dĕ-pres'ōr lā'bē-ī in-fēr'ē-ōr'is mŭs'ĕl) Origin, anterior portion of lower border of mandible; insertion, orbicularis oris musculus and skin of lower lip; action, depresses lower lip; nerve supply, facial.
Synonym(s): musculus depressor labii inferioris [TA] .