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Medial rectus

Head & throat

Origin
Common tendinous ring at the back of the orbit
Insertion
Inner surface of the eyeball
Action
Turns the eye inward, toward the nose
Nerve supply
Oculomotor nerve (CN III)

The largest of the eye muscles. Both medial recti work together to turn the eyes inward when you focus on something close.

Medial rectus anatomy page →

Exercises that train the medial rectus

No exercise in this guide targets the medial rectus directly yet.

Nearby muscles

Sources

Last updated 18 October 2026. For education only — not medical advice, and not reviewed by a clinician.