The Zygomaticus Minor Muscle of a Male Viewed Laterally

Description

Running obliquely from the zygomatic bone toward the upper lip, the zygomaticus minor sits superficial in the midface, just anterior to the masseter and superior to the oral commissure. From a lateral perspective, its slender belly is appreciated as it courses inferomedially over the zygomatic prominence, typically lying medial to the larger zygomaticus major that angles toward the modiolus. Deep to it, the maxilla forms the bony substrate of the cheek, while the overlying skin and subcutaneous fat define the malar contour. Small muscle. Clear line of pull. Appreciating the zygomaticus minor in profile matters when teaching or planning interventions around upper lip elevation and nasolabial fold dynamics. This muscle contributes to raising the upper lip and deepening the nasolabial sulcus, and it can be affected in facial nerve dysfunction, with weakness producing subtle flattening of midfacial expression rather than an obvious oral commissure droop. The lateral view also helps orient clinicians to neighboring injection and dissection planes in the infraorbital region, where the infraorbital neurovascular bundle emerges inferior to the orbit and deep to the mimetic musculature. Common use cases include head and neck anatomy courses covering muscles of facial expression, plastic and reconstructive surgery texts discussing perioral and midface procedures, and dental or maxillofacial education focused on soft tissue landmarks for local anesthesia and incision planning. Facial expression animation and patient education materials also benefit from a clean depiction of this short, superior cheek elevator. Anatomical accuracy verified by SciePro's Medical Advisory Board.