Muscles of Orbit Flashcards
superior oblique
O: body of sphenoid bone
I: sclera (tendon passes through trochlea)
N: trochlear nerve (CN IV)
A: abducts, depresses and medially rotates eyebal;
levator palpebrae superioris
O: lesser wing of sphenoid bone,
I: skin of tarsus and skin of sup eyelid
N: occulomotor nerve
A: elevates sup eyelid
inferior oblique
O: ant part of floor of orbit
I: sclera deep to lat rectus muscle
N: occulomotor nerve (CN III)
A: elevates, abducts, and lat rotates eyeball
superior rectus
O: common tendinous ring
I: sclera, just post to corneoscleral junction
N: oculomotor (CN III)
A: elevates, adducts, and med rotates eyeball
inferior rectus
O: common tendinous ring
I: sclera just post to corenoscleral junction
N: oculomotor (CN III)
A: depresses, adducts, and lat rotates eyeball
medial rectus
O: common tendinous ring
I: sclera just post to corenoscleral junction
N: oculomotor (CN III)
A: adducts eyeball
lateral recuts
O: common tendinous ring
I: sclera just post to corenoscleral junction
N: abducent (CN VI)
A: abducts eyeball
