Lateral rectus muscle

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Lateral rectus
Eyemuscles.png
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
Gray785.png
Figure showing the mode of innervation of the Recti medialis and lateralis of the eye.
Latinmusculus rectus lateralis bulbi
Gray'ssubject #227 1022
Originannulus of Zinn at the orbital apex
Insertion   7 mm temporal to the limbus
Artery
Nerveabducens nerve
Actionsabducts the eyeball (makes it move outwards)
 
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Lateral rectus
Eyemuscles.png
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
Gray785.png
Figure showing the mode of innervation of the Recti medialis and lateralis of the eye.
Latinmusculus rectus lateralis bulbi
Gray'ssubject #227 1022
Originannulus of Zinn at the orbital apex
Insertion   7 mm temporal to the limbus
Artery
Nerveabducens nerve
Actionsabducts the eyeball (makes it move outwards)
For the muscle of the neck, see Rectus capitis lateralis muscle

The lateral rectus muscle is a muscle in the orbit. It is one of six extraocular muscles that control the movements of the eye (abduction in this case) and the only muscle innervated by the abducens nerve, cranial nerve VI.

Its function is to bring the pupil away from the midline of the body. It is tested clinically by asking the patient to look laterally.

Additional images


credit: Patrick J. Lynch

External links