Superior Lip Levator Muscle, Anterior View

Description

Arising from the infraorbital margin of the maxilla, the levator labii superioris descends inferiorly toward the upper lip, where its fibers blend with the orbicularis oris and the skin of the nasolabial region. Medially it lies adjacent to the side of the nose and the course of the angular vessels, while laterally it approaches the zygomaticus minor on the anterior cheek. Superior to its belly, the infraorbital foramen marks the passage of the infraorbital nerve and vessels. Superficial facial fat pads frame the muscle. Understanding the levator labii superioris in anterior view helps when teaching the layered anatomy of the midface and when planning procedures that can alter upper-lip elevation. Overactivity or asymmetry contributes to excessive gingival display (gummy smile), and targeted chemodenervation is often placed near the muscle’s insertional zone to reduce upper-lip lift while avoiding unwanted diffusion into the levator labii superioris alaeque nasi. Surgeons also reference this corridor during approaches to the infraorbital rim and during midface reconstruction, where protecting the infraorbital nerve is a practical concern. Use this artwork in head and neck anatomy curricula, facial expression modules, or surgical atlases discussing perioral musculature, nasolabial fold anatomy, and injection mapping for aesthetic and reconstructive practice. It also fits well in patient education materials explaining why upper-lip position changes after trauma, scar contracture, or neuromuscular imbalance. Anatomical accuracy verified by SciePro's Medical Advisory Board.