Superior rectus muscle
| Superior rectus | |
|---|---|
View of the eye from above, showing the action of the superior rectus muscle.
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| Details | |
| Origin | annulus of Zinn at the orbital apex |
| Insertion | 7.5 mm superior to the limbus |
| Nerve | oculomotor nerve |
| Actions | elevates, intorsion, and rotates medially the eye |
| Identifiers | |
| Latin | musculus rectus superior bulbi |
| TA | A15.2.07.010 |
| FMA | 49035 |
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Anatomical terms of muscle
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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 muscle is the only muscle that is capable of elevating the pupil when it is in a fully abducted position.
The right eye in sagittal section, showing the fascia bulbi (semidiagrammatic).
Superior rectus muscle
Superior rectus muscle
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
Extrinsic eye muscle. Nerves of orbita. Deep dissection.
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Wikipedia