Superior labial artery
The superior labial artery (Latin: arteria labialis superior) is a branch of the facial artery. This artery supplies the skin and muscles of the upper lip, the nasal septum and the alae (wings) of the nose.
The superior labial artery is larger than the inferior labial artery. It arises from the facial artery as the facial artery ascends to the maxilla and then goes along the edge of the upper lip, lying between the mucous membrane and the orbicularis oris muscle. The superior labial artery forms anastomoses with the same artery of the contralateral side and also with the inferior labial artery. On its course, the artery gives off an alar branch and a septal branch, which ramifies anteroinferiorly in the nasal septa.