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Inferior rectus

Other Terms: Musculus rectus inferior, Muscle droit inférieur

Muscle parts

None

Latin name

Musculus rectus inferior

Latin muscle parts

None

Group

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

Etymology

The English name for this muscle is the inferior straight muscle (of the eye). The word rectus is Latin for “straight.” The Latin word inferior comes out of inferus meaning “low or lower.”

Origin

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

Insertion

Inferior surface of the anterior part of the sclera

Action

Depresses, adducts, and extorts 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 inferior

French

Muscle droit inférieur

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