Zygomatic Branch of the Facial Nerve, Lateral View

Description

Arising from the parotid plexus anterior to the auricle, the zygomatic branch of the facial nerve (CN VII) courses anterosuperiorly across the zygomatic arch toward the lateral canthus, running superficial to the masseter and deep to the subcutaneous tissues of the cheek. Along its path, it parallels the superior margin of the zygomaticus major and passes superior to the buccal branches that travel more anteriorly across the midcheek. The temporalis occupies the temporal fossa superiorly, while the masseter sits posterolateral to the mandibular ramus, and the sternocleidomastoid descends inferoposteriorly in the neck. Bony landmarks, including the zygomatic bone and mandibular body, anchor the relationships. Clean and readable. This lateral perspective matters because the zygomatic branch is one of the facial nerve pathways most relevant to eyelid closure and periorbital expression via its communications to orbicularis oculi, and its superficial course makes it vulnerable during rhytidectomy, zygomatic fracture exposure, and parotid surgery. Intraoperative nerve monitoring often focuses on this territory when dissection approaches the zygomatic arch and lateral orbital rim. The illustration also supports teaching the classic rule that facial nerve motor branches radiate anteriorly from the parotid gland, a concept that clarifies why a seemingly small incision near the arch can produce postoperative lagophthalmos. Use this asset in head and neck anatomy modules, cranial nerve teaching sets, and surgical atlases covering facelift planes, parotidectomy, or approaches to the zygoma and lateral orbit. It also fits clinical handouts for facial nerve injury patterns, correlating branch-level dysfunction with targeted weakness of orbicularis oculi and adjacent mimetic muscles. Anatomical accuracy verified by SciePro's Medical Advisory Board.