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NYCC Gross Anatomy 3 > Eye Mm, Nn, Aa, Vv. > Flashcards

Eye Mm, Nn, Aa, Vv. Flashcards

1
Q

what is elevation of the eyeball?

A

moving pupil superiorly

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2
Q

what is depression of the eyeball?

A

moving pupil inferiorly

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3
Q

what is abduction of the eyeball?

A

moving pupil laterally

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4
Q

what is adduction of the eyeball?

A

moving pupil medially

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5
Q

what is internal rotation (intorsion) of the eyeball?

A

rotating upper part of pupil medially (toward nose)

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6
Q

what is external rotation (extorsion) of the eyeball?

A

rotating upper part of pupil laterally (toward temple)

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7
Q

name the extraocular muscles

A
  • levator palpebrae superioris
  • superior rectus
  • inferior rectus
  • medial rectus
  • lateral rectus
  • superior oblique
  • inferior oblique
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8
Q

levator palpebrae superioris receives ____ innervation

A

sympathetic

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9
Q

origin & insertion of levator palpebrae superioris

A

O: lesser wing of sphenoid bone, superior & anterior to optic canal

I: superior tarsus & skin of superior eyelid

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10
Q

innervation of levator palpebrae superioris

A

CN III: occulomotor

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11
Q

what are the primary movers and stabilizers for elevation of the eyeball?

A

primary: sup rectus
stabilizer: inf oblique

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12
Q

how would superior rectus be tested?

A

look laterally & upward

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13
Q

what are the primary movers and stabilizers for depression of the eyeball?

A

primary: inf rectus
stabilizer: sup oblique

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14
Q

what are the primary movers and stabilizers for adduction of the eyeball?

A

primary: med rectus
stabilizer: sup & inf rectus

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15
Q

what are the primary movers and stabilizers for abduction of the eyeball?

A

primary: lat rectus
stabilizer: inf & sup oblique

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16
Q

what are the primary movers and stabilizers for internal rotation of the eyeball?

A

primary: sup oblique
stabilizer: sup rectus

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17
Q

what are the primary movers and stabilizers for external rotation of the eyeball?

A

primary: inf oblique
stabilizer: inf rectus

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18
Q

how would inferior rectus be tested?

A

look laterally & downward

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19
Q

how would lateral rectus be tested?

A

look laterally

20
Q

how would medial rectus be tested?

A

look medially

21
Q

how would inferior oblique be tested?

A

look medially & upward

22
Q

how would superior oblique be tested?

A

look medially & downward

23
Q

origin & insertion of superior oblique

A

O: body of sphenoid bone
I: tendon passes through fibrous ring (trochlea), changes direction & inserts into sclera deep to sup rectus

24
Q

innervation of superior oblique

A

CN IV: Trochlear

25
Q

origin & insertion of inferior oblique

A

O: ant part of floor of orbit
I: sclera deep to lateral rectus

26
Q

origin & insertion of superior, inferior, medial & lateral rectus

A

O: common tendinous ring
I: sclera just posterior to corneoscleral junction

27
Q

what extraocular muscles are innervated by CN III: oculomotor?

A
  • levator palpebrae superioris
  • IO
  • SR
  • IR
  • MR
28
Q

innervation of lateral rectus

A

CN VI: abducent

29
Q

the optic nerve exits the skull through the ____

A

optic canal

30
Q

what is innervated by the superior division of the oculomotor nerve?

A

levator palpebrae superioris & superior rectus

31
Q

what is innervated by the inferior division of the oculomotor nerve?

A

medial rectus
inferior rectus
inferior oblique

32
Q

CN III carries preganglionic ____ fibers to the ____ ganglion

A

parasympathetic
ciliary

33
Q

the oculomotor nerve exits the skull through the ____

A

superior orbital fissure

34
Q

the trochlear nerve exits the skull through the ____

A

superior orbital fissure

35
Q

the abducent nerve exits the skull through the ____

A

superior orbital fissure

36
Q

the ophthalmic nerve (V1) exits the skull through the ____

A

superior orbital fissure

37
Q

name the 3 branches of the ophthalmic nerve (V1)

A

frontal n
nasociliary n
lacrimal n

38
Q

describe the location of the ciliary ganglion

A

between optic n & lateral rectus

39
Q

what fibers are carried by the short ciliary nerves?

A
  • sensory branches of V1 (nasociliary n)
  • postgang. PSNS & SNS to ciliary body & sphincter pupillae
40
Q

the nasociliary nerve is found in the orbit associated with which artery?

A

opthalmic a

41
Q

____ ciliary nerves do NOT go through the ciliary ganglion

A

long

42
Q

what fibers are carried by the long ciliary nerves?

A
  • sensory branches of V1
  • postgang. SNS to dilator pupillae
43
Q

the ophthalmic artery is a branch of the ____

A

internal carotid a

44
Q

name the branches of the ophthalmic artery

A
  • central a of retina
  • lacrimal
45
Q

the infra-orbital artery is a branch of the ____

A

maxillary a

46
Q

the superior and inferior ophthalmic veins drain into the ____

A

cavernous sinus

47
Q

a 16-year-old girl experiences ptosis and miosis in her right eye after resection of a lymphangioma from the apex of her right lung. what structures were damaged during the surgery to cause these symptoms?

A

CN III: oculomotor

NYCC Gross Anatomy 3 (27 decks)

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