Superior rectus muscle
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| Superior 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 | Rectus superior | |
| Gray's | subject #227 1022 | |
| Origin: | annulus of Zinn at the orbital apex | |
| Insertion: | 7.5 mm superior to the limbus | |
| Blood: | ||
| Nerve: | oculomotor nerve | |
| Action: | elevates, adducts, and rotates the eye medially | |
The superior rectus muscle is a muscle in the orbit. It is one of the extraocular muscles.
It is innervated by the superior division of the oculomotor nerve (Cranial Nerve III).
In the primary position (looking straight ahead), the superior rectus muscle's primary function is elevation, although it also contributes to intorsion and adduction.
[edit] Additional images
 The sinuses at the base of the skull. |
[edit] External links
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