Which list correctly identifies the three main branches of the trigeminal nerve?

Which list correctly identifies the three main branches of the trigeminal nerve?

• A. Ophthalmic Nerve (V1), Maxillary Nerve (V2), and Mandibular Nerve (V3)
• B. Maxillary Nerve (V2)
• C. Trigeminal Nerve supplies sensation to the face via the facial nerve
• D. Ophthalmic Nerve (V1) and Mandibular Nerve (V3)

Answer: (A)

The trigeminal nerve splits into three main divisions that supply the face. The ophthalmic division carries sensory information from the forehead, scalp, upper eyelid, and cornea; the maxillary division carries sensory input from the midface, upper lip, cheek, and upper teeth; and the mandibular division carries sensory input from the lower face and lower teeth, and also provides motor fibers to the muscles of mastication. Together, these three branches—ophthalmic, maxillary, and mandibular—define the three primary branches of the trigeminal nerve. The other options are incomplete or inaccurate: one omits a division, one pairs a division with the wrong function, and another incorrectly assigns facial-nerve sensory input to the face.

The trigeminal nerve splits into three main divisions that supply the face. The ophthalmic division carries sensory information from the forehead, scalp, upper eyelid, and cornea; the maxillary division carries sensory input from the midface, upper lip, cheek, and upper teeth; and the mandibular division carries sensory input from the lower face and lower teeth, and also provides motor fibers to the muscles of mastication. Together, these three branches—ophthalmic, maxillary, and mandibular—define the three primary branches of the trigeminal nerve. The other options are incomplete or inaccurate: one omits a division, one pairs a division with the wrong function, and another incorrectly assigns facial-nerve sensory input to the face.