Along its path the facial artery is deep to the platysma, risorius, and zygomaticus major and minor, superficial to the buccinator and levator anguli oris, and may pass superficially to or through the levator labii superioris.
Branches of the facial artery include the superior and inferior labial branches and the lateral nasal branch (Fig. 8.67).
The labial branches arise near the corner of the mouth:
The inferior labial branch supplies the lower lip.