levator anguli oris muscle

le·va·tor an·gu·li o·ris mus·cle

(lě-vā'tŏr an'gyū-lī ō'ris mŭs'ĕl) Origin, canine fossa of maxilla; insertion, orbicularis oris and skin at angle of mouth; action, raises angle of mouth; nerve supply, facial.
Synonym(s): musculus levator anguli oris [TA] .