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Anatomy Head And Neck > Orbit 2 > Flashcards

Orbit 2 Flashcards

1
Q

blue arrow

A

superior tarsal plate

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2
Q

green arrow

innervation?

A

superior rectus

superior division of oculomotor CN III

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3
Q

the inability to depress an adducted eye indicates a lack of function of what muscle

A

superior oblique

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4
Q

superior oblique actions

A

depression, abduction, intorsion

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5
Q

green dot

A

lateral rectus

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6
Q

orange arrow

A

superior oblique

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7
Q

right eye looking up and to the left uses which muscles

A

inferior oblique, medial rectus

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8
Q

red arrow

innervation?

A

inferior rectus

inferior division of oculomotor

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9
Q

the left eye looking up and to the left uses which muscles

A

superior rectus, lateral rectus

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10
Q

left eye looking down and to the right uses which muscles

A

superior oblique, medial rectus

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11
Q

oculomotor nerve CN III passes through the _____ into the orbit

A

superior orbital fissure

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12
Q

pink arrow

A

medial rectus

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13
Q

pink arrow

innervation?

A

medial rectus

inferior division of oculomotor CN III

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14
Q

the right eye looking down and to the left uses which muscles

A

superior oblique, medial rectus

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15
Q

the left eye looking down and to the left uses which muscles

A

inferior rectus, lateral rectus

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16
Q

lateral rectus action

A

strong abduction

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17
Q

blue muscle

A

lateral rectus

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18
Q

medial rectus actions:

A

adduction

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19
Q

right eye looking down and to the right uses which muscles

A

inferior rectus, lateral rectus

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20
Q

light blue arrow

A

inferior oblique

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21
Q

blue arrow

A

superior rectus

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22
Q

which nerve passes along the medial side of the lateral rectus muscle

A

abducent nerve CN VI

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23
Q

green arrow

A

superior rectus

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24
Q

green arrow

A

superior division of the oculomotor never CN III

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25
Q

the abducent nerve enters the orbit through the

A

superior orbital fissure

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26
Q

What are the two divisions of the oculomotor nerve?

A

Superior and inferior

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27
Q

which muscle of the eye does not have an origin on the tendinous ring

A

inferior oblique has an origin on the medial anterior wall of the orbit inferior to the trochlea

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28
Q

left eye looking up and to the right uses which muscles

A

inferior oblique, medial rectus

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29
Q

the superior division of the oculomotor nerve innervates:

A

superior rectus, levator palpebrae superioris

30
Q

red arrow

A

inferior rectus

31
Q

green arrow

A

levator palpebrae superioris

32
Q

right eye looking up and to the right uses which muscles

A

superior rectus, lateral rectus

33
Q

pink arrow

A

medial rectus

34
Q

blue arrow

A

lateral rectus

35
Q

green ring

A

common tendinous ring

36
Q

orange arrow

A

superior oblique

37
Q

looking up uses which muscles

A

inferior oblique, superior rectus

38
Q

yellow muscle

A

superior oblique

39
Q

why does superior rectus slightly adduct the eye

A

the muscle is slightly medial to the central axis

40
Q

green arrow

A

levator palpebrae superioris

41
Q

inferior oblique actions

A

elevation, abduction, extorsion

42
Q

green arrow

A

abducent nerve CN VI

43
Q

light blue arrow

A

trochlea

44
Q

light blue arrow

A

trochlea

45
Q

looking down uses which muscles

A

superior oblique, inferior rectus

46
Q

red muscle

A

levator palpebrae superioris

47
Q

green arrow

A

trochlear nerve

48
Q

lateral rectus actions:

A

abduction

49
Q

superior rectus actions

A

elevation, adduction, intorsion

50
Q

green arrow

A

abducent nerve CN VI

51
Q

pink muscle

A

inferior rectus

52
Q

medial rectus action

A

strong adduction

53
Q

blue dot

A

inferior oblique

54
Q

inferior rectus actions

A

depression, adduction, extorsion

55
Q

blue arrow

innervation?

A

lateral rectus

Abducent CN VI

56
Q

green arrow

A

trochlear nerve

57
Q

which nerve passes along the superior surface of the superior oblique muscle?

A

trochlear nerve

58
Q

the inability to elevate an abducted eye indicates a lack of function in which muscle

A

superior rectus

59
Q

green arrow

A

superior division of the oculomotor nerve CN III

60
Q

purple muscle

A

medial rectus

61
Q

the levator palpebrae superioris is innervated by the

A

superior division of the oculomotor CN III

62
Q

blue arrow

A

inferior division of the oculomotor nerve CN III

63
Q

blue arrow

A

inferior division of the oculomotor nerve CN III

64
Q

red arrow

A

inferior rectus

65
Q

the inferior division of the oculomotor nerve innervates:

A

medial rectus, inferior rectus, inferior oblique, preganglionic parasympathetics

66
Q

orange muscle

A

superior rectus

67
Q

common tendinous ring function:

A

serves as the shared insertion point for the muscles of the orbit

68
Q

superior rectus action

A

strong elevation, slight adduction, intorsion

69
Q

trochlear nerve enters the orbit through the

A

superior orbital fissure

70
Q

green muscle

A

inferior oblique

71
Q

orange arrow

innervation?

A

superior oblique

trochlear nerve (CN IV)

Anatomy Head And Neck (13 decks)

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