Anterior Perspective of the Levator Labii Superioris

Description

Arising from the maxilla just inferior to the orbital margin, the levator labii superioris runs inferiorly and slightly medially as a narrow facial muscle band toward the upper lip. Adjacent fibers consistent with the levator labii superioris alaeque nasi sit closer to the lateral nasal cartilage, while the alar region itself is indicated by the blue-tinted nasal cartilages. Bony landmarks remain in full anterior view, including the frontal bone, paired orbits, piriform aperture, maxilla with visible dentition, and the mandible, with the upper cervical vertebrae aligned inferiorly at the craniovertebral junction. Clinically, this view helps you relate mimetic muscle vectors to the fixed maxillary attachments that shape nasolabial contour and upper lip elevation. The levator labii superioris and the levator labii superioris alaeque nasi are key elevators of the upper lip and dilators of the nasal vestibule, and their function becomes conspicuous in facial nerve (CN VII) weakness, where reduced lift can flatten the nasolabial fold and contribute to oral incompetence. Surgeons also reference these fibers and their relationship to the infraorbital foramen region when planning sublabial approaches or placing midface injections, since inadvertent diffusion can alter smile dynamics. Ideal for head and neck anatomy teaching in dental, medical, and speech and language pathology courses, where learners must connect maxillary surface anatomy to facial expression mechanics. It also supports figures for rhinoplasty and perioral rejuvenation chapters that need a clean anterior map of nasal cartilage, upper lip elevators, and their bony frame. Anatomical accuracy verified by SciePro's Medical Advisory Board.