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Medial rectus

Other Terms: Musculus rectus medialis, Muscle droit médial

Muscle parts

None

Latin name

Musculus rectus medialis

Latin muscle parts

None

Group

Head somite muscle – pre-otic group (Extra-ocular muscle)

Etymology

The English name for this muscle is the middle straight muscle (of the eye). The word rectus is Latin for “straight.” The Latin term medialis is derived from the Latin medius meaning “middle.”

Origin

Medial part of the common tendinous ring that surrounds the optic canal

Insertion

Medial surface of the anterior part of the sclera

Action

Adducts the eye.

Nerve supply

Oculomotor nerve (Cranial nerve III)

Blood supply

Muscular branches of the ophthalmic artery via the internal carotid artery.

Latin

Musculus rectus medialis

French

Muscle droit médial

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