Superior rectus muscle

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.

The superior rectus muscles is shown in this image of the right eye from above. Hover the mouse over the structures for their names. Click for more information.
Superior rectus
View of the eye from above, showing the action of the superior rectus muscle.
Details
Originannulus of Zinn at the orbital apex
Insertion7.5 mm superior to the limbus
Nerveoculomotor nerve
Actionselevates, intorsion, and rotates medially the eye
Identifiers
Latinmusculus rectus superior bulbi
TA98A15.2.07.010
TA22042
FMA49035
Anatomical terms of muscle

Structure

Function

It elevates, adducts, and helps intort (rotate medially) the eye.

Clinical significance

Testing

The superior rectus muscle is the only muscle that is capable of elevating the eye when it is in a fully abducted position.[1]

Additional images

References

  1. "Eye Theory". Cim.ucdavis.edu. Retrieved 2012-12-02.
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