Superior Lip Levator, Lateral View

Description

Arising from the anterior surface of the maxilla along the infraorbital margin, the levator labii superioris descends obliquely infero-anterior toward the upper lip, blending with the orbicularis oris at the superior labial margin. A lateral male view places the muscle superficial to the maxilla and anterior to the zygomatic region, with the nasal cartilage and piriform aperture positioned medially. Posterior to the labial soft tissues, the maxillary dentition and the mandible frame the oral fissure, while the temporomandibular joint sits posterosuperior to the mandibular ramus. Cervical vertebrae C1 through C7 align inferiorly as a bony reference column. Clear landmarks. Functionally, levator labii superioris elevates the upper lip and deepens the nasolabial fold, a movement pattern commonly assessed in facial nerve (CN VII) examinations and in preoperative documentation for facial reanimation. This lateral orientation helps separate its line of pull from neighboring elevators such as levator labii superioris alaeque nasi and zygomaticus minor, a distinction that matters when teaching muscular contributions to expression versus nasal valve support. Injectors also rely on these surface relationships to plan botulinum toxin placement for gummy smile correction while avoiding unintended upper lip ptosis. Ideal for head and neck anatomy courses, dental and maxillofacial training modules, and publisher figures discussing perioral musculature, the nasolabial complex, or facial nerve motor testing in a clinical exam sequence. It also suits patient-facing surgical counseling materials where bony landmarks, dentition, and the upper lip elevator can be oriented in a single lateral plate. Anatomical accuracy verified by SciePro's Medical Advisory Board.