superior oblique (muscle)
extraocular muscle in orbit; origin, above the medial margin of the optic canal; insertion, by a tendon passing through the trochlea, or pulley, and then reflected backward, downward, and laterally to the sclera between the superior and lateral recti; action, primary, intorsion; secondary, depression and abduction; nerve supply, trochlear nerve.
Synonym(s): musculus obliquus superior (bulbi)TA
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