Superior Rectus Muscle

**Semantic type:** Anatomical Structure

**Definition:** One of the extraoculomotor muscles, which arises from a common tendinous ring in the posterior portion of the orbit, inserts on the upper part of the sclera, is innervated by CN III, and functions to elevate, adduct, and medially rotate the eye.

**Synonyms:** - MUSCLE, DORSAL RECTUS