Tags: Anatomical Structure, Muscle.
The medial rectus muscle is a muscle in the orbit.As with most of the muscles of the orbit it is innervated by the inferior division of the oculomotor nerve (Cranial Nerve III).This muscle shares an origin with several other extrinsic eye muscles the anulus tendineus or common tendon.It is the largest of the extraocular muscles and its only action is adduction of the eyeball. Its function is to bring the pupil closer to the midline of the body.
