Question

general sensation to the eyeball is mediated by which cranial nerve? cn 2 cn 3 cn 5 cn 7

Explanation:

• CN 2 (Optic nerve) is for vision (special sensory - sight), not general sensation.
• CN 3 (Oculomotor nerve) controls most eye muscles (motor function), not general sensation.
• CN 5 (Trigeminal nerve) has branches (ophthalmic branch) that carry general sensation (pain, touch, temperature) from the eyeball.
• CN 7 (Facial nerve) is mainly for facial muscle movement (motor) and some taste (special sensory), not general sensation of the eyeball.

Answer:

CN 5