levator labii superioris

noun

levator la·​bii su·​pe·​ri·​or·​is -ˈlā-bē-ˌī-su̇-ˌpir-ē-ˈȯr-əs 

: a facial muscle arising from the lower margin of the orbit and inserting into the muscular substance of the upper lip which it elevates

called also quadratus labii superioris