levator labiorum

plural levatores labiorum · plural levatores labiorums

1. One of the facial muscles that lift the lips, open the mouth, and flare the nostrils.

   The Ramus Buccinalis-labialis, that branch of the fifth nerve which goes to the buccinator, triangularis, levator labiorum, and orbicularis muscles.

   1829, Charles Bell, “On the nerves of the face; being a second paper on that subject”, in Philosophical Transactions of the Royal Society

   2 more examples

   The Occipito Forntalis wrinkles the forehead; the Corrugator Supercilii knits the brow; the Levatores Labiorums lift up the lip, spread wide the nostrils, and open the mouth; […]

   1810, John Bell, Engravings of the Bones, Muscles, and Joints, page 58

   The prolonged branch is the labial division; it runs nearer the alveolar processes of the lower jaw, and becomes so superficial as to admit a union with the portio dura: from thence passing under the facial artery it may be traced into the triangularis or depressor anguli oris, the levator labiorum communis, and the lateral portion of the orbicularis oris.

   1936, Medical Classics - Volume 1, page 162