Cranial Nerves Flashcards

1
Q

Cranial Nerve I

A

Olfactory Nerve

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2
Q

Cranial Nerve II

A

Optic Nerve

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3
Q

Cranial Nerve III

A

Oculomotor Nerve

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4
Q

Cranial Nerve IV

A

Trochlear Nerve

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5
Q

Cranial Nerve V

A

Trigeminal Nerve

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6
Q

Cranial Nerve VI

A

Abducens Nerve

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7
Q

Cranial Nerve VII

A

Facial Nerve

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8
Q

Cranial Nerve VII

A

Vestibulocochlear Nerve

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9
Q

Cranial Nerve IX

A

Glossopharyngeal Nerve

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10
Q

Cranial Nerve X

A

Vagus Nerve

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11
Q

Cranial Nerve XI

A

Spinal Accessory Nerve

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12
Q

Cranial Nerve XII

A

Hypoglossal Nerve

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13
Q

Cranial Nerve I sensory, motor, or both

A

sensory

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14
Q

Cranial Nerve I I sensory, motor, or both

A

sensory

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15
Q

Cranial Nerve III sensory, motor, or both

A

motor

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16
Q

Cranial Nerve IV sensory, motor, or both

A

motor

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17
Q

Cranial Nerve V sensory, motor, or both

A

both

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18
Q

Cranial Nerve VI sensory, motor, or both

A

motor

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19
Q

Cranial Nerve VII sensory, motor, or both

A

both

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20
Q

Cranial Nerve VIII sensory, motor, or both

A

sensory

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21
Q

Cranial Nerve IX sensory, motor, or both

A

both

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22
Q

Cranial Nerve X sensory, motor, or both

A

both

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23
Q

Cranial Nerve XI sensory, motor, or both

A

motor

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24
Q

Cranial Nerve XII sensory, motor, or both

A

motor

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25
Q

4 cranial nerves with sympathetic innervation

A

oculomotor (CN III)
Facial (CN VII)
Glosspharyngeal (IX)
Vagus (X)

26
Q

olfactory nerve fibers go through which foramen

A

cribriform plate

27
Q

OLFACTORY NERVE FUNCTION

A

SMELL/OLFACTION

28
Q

olfactory trigone

A

some nerve fibers go laterally and others cross hemisphere via lateral commissure.

29
Q

olfactory nerves begin in the ___.

A

nasal mucosa

30
Q

only cranial nerve that bypasses thalamus

A

olfactory nerve

31
Q

optic nerve fibers cross at

A

optic chiasm

32
Q

optic nerve function

A

vision

33
Q

otic nerve fibers originate in the __.

A

retina

34
Q

optic nerve exits via what foramen

A

optic canal

35
Q

what can affect the optic chiasm and cause visual defects?

A

enlarged pituitary gland

36
Q

oculomotor nerve emerges from what?

A

interpeduncular fossa

37
Q

oculomotor nerve fibers enter orbit via what foramen

A

superior orbital fissure

38
Q

upper division of occulomotor nerve innervates

A

superior rectus, levator palpebrae superioris

39
Q

lower division of occulomotor nerve innervates

A

inferior oblique, inferior rectus, medial rectus, and parasympathetic innervation (ciliary muscles)

40
Q

function of levator palpebrae superioris

A

open eyelid

41
Q

function of superior rectus

A

eye rotates up

42
Q

function of inferior oblique

A

eye rotates up and out

43
Q

function of inferior rectus

A

eye rotates down

44
Q

function of medial rectus

A

eye rotates in

45
Q

function of lateral rectus

A

eye rotates out- abducens

46
Q

innervation of lateral rectus

A

abducens nerve

47
Q

innervation of superior oblique

A

trochlear nerve

48
Q

function of superior oblique

A

eye rotates down and out

49
Q

cardinal sign for problems with oculomotor nerve

A

ptosis (drooping eyelid)

50
Q

oculomotor parasympathetic function

A

constricts pupil (constrictor pupillae muscles) and changes shape of lens (ciliary muscle). results in distance accommodation.

51
Q

origination point for all muscles except inferior oblique

A

annulus of zin

52
Q

where does inferior oblique originate?

A

medial surface of orbit

53
Q

which cranial nerves enter via the superior orbital fissure?

A

CN III, VI, IV
oculomotor
abducens
trochlear

54
Q

only cranial nerve attached to dorsal aspect of brainstem

A

trochlear nerve

55
Q

trochlear nerve foramen

A

superior orbital fissure

56
Q

motor function of trochlear nerve

A

innervates superior oblique, moves eye down and out

57
Q

smalles cranial nerve

A

trochlear nerve

58
Q

3 divisions of trigeminal nerve

A
  1. ophthalmic (V1)
  2. maxillary (V2)
  3. mandibular (V3)
59
Q

ophthalmic division of trigeminal nerve foramen

A

superior orbital fissure

60
Q

maxillary division of trigeminal nerve foramen

A

foramen rotundum

61
Q

mandibular division of trigeminal nerve foramen

A

forman ovale