Which muscle aids in upward eye motion?

The muscle responsible for aiding in upward eye motion is the superior rectus. This muscle is one of the extraocular muscles, which control the movements of the eye. The superior rectus specifically functions to elevate the eye (move it upward) and is innervated by the oculomotor nerve.

Understanding the role of the superior rectus is essential for grasping how eye movements are coordinated and the specific actions of each of the extraocular muscles. While other muscles listed may contribute to different movements or angles of the eye, the superior rectus is uniquely positioned to primarily initiate upward motion. The medial rectus primarily pulls the eye medially, the lateral rectus allows for lateral movements, and the inferior oblique aids in elevating the eye but also contributes to other movements.