Superior rectus muscle

Muscle infobox
Name = Superior rectus
Latin = musculus rectus superior bulbi
GraySubject = 227
GrayPage = 1022

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Caption = "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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| Caption2 = Sagittal section of right orbital cavity.
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 medially the eye
DorlandsPre = m_22
DorlandsSuf = 12550523
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.

=Additional

External links

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* [http://cim.ucdavis.edu/Eyes/eyeText.htm Diagram]