cutaneous muscle levator nasolabialis muscle NCIT:C52950 Is a principal muscle of the lips which arises over the dorsum of the nose. It runs cranioventrally to insert partly on the wing of the nostril and partly into the lateral part of the upper lip. This muscles function includes dilation of the nostril, elevation and retraction of the upper lip. Branches of the facial nerve supply innervation to this muscle. UBERON:0011464 MA:0002334 EMAPA:37502 levator nasolabialis UMLS:C1708693