Eye movements Flashcards
what innervates the superior oblique muscle of the eye
CN4
what innervates the inferior oblique
CN3
what innervates the superior rectus
CN3
what innervates the inferior rectus
CN3
what innervates the medial rectus
CN3
what innervates the lateral rectus
CN6
what innervates the levator palpebrae superioris
CN3
what does the levator palpebrae superioris do
inserts into the tarsal plate of the upper eyelid and elevates it with sympathetic assistance
what causes the eye to look up
inferior oblique + superior Rectuss
what causes the eye to look down
superior oblique and inferior rectus
what causes the eye to look laterally
lateral rectus
what causes the eye to look medially
medial rectus
what causes the eye to look superior-lateral
inferior oblique
what causes the eye to look superior-medial
superior rectus
what causes the eye to look inferior-lateral
superior oblique
what causes the eye to look inferior-medial
inferior rectus
what would a left CN4 palsy show on the H-test
left eye lateral deviation in forward gaze
what would a left CN6 palsy show on the H-test
left eye medial deviation in forward gaze
what 3 muscles control the eyelid
orbicularis oculi
levator palpebrae superioris
superior tarsal muscle
what innervates the orbicularis oculi
CN7
what innervates the superior tarsal muscle
sympathetic stimulation
what does the oribularis oculi do
close the eyes
what does the superior tarsal muscle do
open eyes (with help from LPS)
what does LPS palsy look like
ptosis - about halfway (as LPS only elevates the upper half of the eye
