The zygomatic nerve is a branch of which division of the trigeminal nerve?

• A. CN V1
• B. CN V2
• C. CN V3
• D. CN VII

Answer: (B)

The zygomatic nerve comes from the maxillary division of the trigeminal nerve. The trigeminal nerve splits into three divisions, and the zygomatic nerve arises specifically from the middle (maxillary) division, not from the ophthalmic or mandibular divisions. In the orbit it travels with the maxillary nerve, then exits through the inferior orbital fissure to give the zygomaticotemporal and zygomaticofacial branches, providing sensation to the cheek and lateral forehead. It also carries postganglionic parasympathetic fibers to the lacrimal gland via a communicating branch to the lacrimal nerve. So the zygomatic nerve is a branch of the maxillary division (V2).