Zygomaticus Minor Muscle, Anterior View

Description

Running obliquely from the zygomatic bone to the upper lip, the zygomaticus minor sits superior and slightly medial to the zygomaticus major in an anterior male facial view. Its fibers descend from the lateral midface toward the orbicularis oris and the musculature of the nasolabial region, where it blends with the levator labii superioris. Lateral to this pairing, the risorius typically courses more horizontally toward the modiolus, while the orbicularis oculi frames the palpebral fissure superiorly. Seen from the front, this muscle is easiest to relate to the surface anatomy of the nasolabial fold and the upper lip elevator complex. Zygomaticus minor contributes to elevation of the upper lip and deepening of the nasolabial sulcus, a pattern clinicians recognize in unilateral facial nerve palsy, where asymmetry of upper lip excursion can persist even when oral commissure movement recovers. For injectors and surgeons, distinguishing the zygomaticus minor from adjacent elevators helps avoid unwanted upper lip retraction or an unnatural smile line during botulinum toxin placement or midface procedures. Faculty can drop this plate straight into head and neck anatomy teaching blocks on muscles of facial expression, pairing it with cranial nerve VII branches and modiolus mechanics. It also suits figure legends in plastic surgery and dermatology texts discussing perioral dynamics, cleft lip repair landmarks, or aesthetic analysis of the zygomatic region in male facial morphology. Anatomical accuracy verified by SciePro's Medical Advisory Board.