Tuesday, June 28, 2011

Supraorbital Nerve

The supraorbital nerve is a continuation of the frontal nerve, which arises from ophthalmic nerve. With a sensory distribution, it gives off the lateral and medial branches. The supraorbital nerve leaves orbit through supraorbital notch, and supplies the skin of upper eyelid, forehead, anterior scalp, and mucosa of frontal sinus. The medial branch of the supraorbital nerve passes over the frontalis muscle, providing sensory supply to the forehead skin and only to the anterior margin of the scalp; the lateral branch branch runs cephalad across the lateral forehead between the galea aponeurotica and the pericranium as the sensory nerve to the frontoparietal scalp.