The Superior Lip Levator Viewed Laterally Beneath The Skin Of A Human Male

Description

Positioned along the lateral midface, the levator labii superioris is shown deep to the skin as it descends from the infraorbital margin of the maxilla toward the upper lip, lying anterior to the masseter and superior to the orbicularis oris at its insertion. Superiorly, its origin sits inferior to the orbit and medial to the zygomatic bone, placing it near the infraorbital foramen where the infraorbital nerve and vessels emerge. Posterior to the highlighted muscle, the auricle outlines the lateral boundary of the field, while the temporalis and masseter frame the cheek and mandibular region. Fiber direction is vertical to slightly inferomedial. Clear topography. Facial expression anatomy is easier to teach in profile because the elevators of the upper lip overlap in the frontal view, and this angle separates levator labii superioris from adjacent elevators such as the zygomaticus minor and levator anguli oris. Clinically, its proximity to the infraorbital nerve matters during infraorbital blocks, maxillary trauma, and midface approaches where retraction or edema can produce upper lip dysesthesia and altered smile dynamics. Surgeons also use these muscular planes when elevating a subcutaneous or sub-SMAS flap in facial rejuvenation, where preserving the relationship between mimetic muscles and their motor branches helps avoid postoperative asymmetry. Plastic surgery and ENT texts can pair this plate with discussions of nasolabial fold anatomy, midface lifting vectors, and safe zones around the infraorbital foramen. Anatomy instructors will also find it useful for head and neck dissections and for correlating mimic muscles with facial nerve function testing in clinical skills sessions. Anatomical accuracy verified by SciePro's Medical Advisory Board.