Cranial Nerve III - Oculomotor Nerve

Cranial nerve III, the oculomotor nerve, arises from the mid-brain and passes into the orbits of the eyes. One part of each oculomotor nerve connects several voluntary muscles: the levator palpebrae superioris muscles, which raise the eyelids, and most of the muscles attached to eye surfaces that cause them to move - the superior rectus, medial rectus, and inferior oblique muscles. The second part of the nerve supplies involuntary muscles inside the eyes. These act to adjust the amount of...