Which nerve consists of three branches named Ophthalmic, Maxillary, and Mandibular?

• A. Facial nerve
• B. Trigeminal nerve
• C. Vagus nerve
• D. Glossopharyngeal nerve

Answer: (B)

The trigeminal nerve is the nerve that consists of three divisions named Ophthalmic, Maxillary, and Mandibular. This is cranial nerve V and serves as the main sensory nerve for the face, with each division covering different regions: Ophthalmic for the forehead and upper face, Maxillary for the midface and upper jaw, and Mandibular for the lower face and jaw. The Mandibular division also carries motor fibers to the muscles of mastication. Because these three branches are specifically named Ophthalmic, Maxillary, and Mandibular, this nerve is identified as the trigeminal nerve. The other nerves listed have different branch patterns and functions, not these three facial divisions.