<prompt> Action of superior rectus:Abduction and intoionAdduction and extoionAdduction and intoionAbduction and extoion  <response>: Superior rectus muscleIt is innervated by the superior division of the oculomotor nerve Cranial Nerve III.In the primary position looking straight ahead, the superior rectus muscles primary function is elevation, although it also contributes to intorsion and adduction. 