Pain sensations from the ethmoidal sinus are carried by: (A) Frontal Nerve, (B) Lacrimal Nerve, (C) Nasocilliary Nerve, (D) Intraorbital Nerve
Answer is C. nasociliary nerve branch of ophthalmic division of trigeminal nerve carries pain sensation from ethmoid sinus. Ref Dhingra 6/e,p 188