levator labii superioris muscle

le·va·tor la·bi·i su·pe·ri·o·ris mus·cle

(lĕ-vā'tŏr lā'bē-ī sū-pēr-ē-ō'ris mŭs'ĕl) Origin, maxilla below infraorbital foramen; insertion, orbicularis oris of upper lip; action, elevates upper lip; nerve supply, facial.
Synonym(s): musculus levator labii superioris [TA] .