Inferior rectus muscle

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Inferior rectus
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Rectus muscles:
2 = superior, 3 = inferior, 4 = medial, 5 = lateral
Oblique muscles: 6 = superior, 8 = inferior
Other muscle: 9 = levator palpebrae superioris
Other structures: 1 = Annulus of Zinn, 7 = Trochlea, 10 = Superior tarsus, 11 = Sclera, 12 = Optic nerve
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Sagittal section of right orbital cavity.
Latin musculus rectus inferior bulbi
Gray's subject #227 1022
Origin: annulus of Zinn at the orbital apex
Insertion: 6.5 mm inferior to the limbus
Artery:
Nerve: inferior branch of oculomotor nerve
Action: depression and adduction
Dorlands/Elsevier m_22/12550484

The inferior rectus muscle is a muscle in the orbit.

Actions

It depresses, adducts, rotates laterally, and extorts the eye.

Innervation

As with most of the muscles of the orbit, it is innervated by the oculomotor nerve (Cranial Nerve III).

Additional images

External links

hu:Musculus rectus inferior nl:Musculus rectus inferior



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