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introductionstatpearls· Introduction· item NBK526067
The superior rectus is one of the seven extraocular muscles. There are a total of four rectus muscles, two oblique muscles, and the levator palpebrae superioris. The superior rectus is one of the four rectus muscles, which also include the superior rectus, the medial rectus, and the lateral rectus. The oblique muscles are the superior and inferior obliques. The levator palpebrae superioris is primarily responsible for eyelid elevation.[1]