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Anatomy Exam 3 > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

How many cranial nerves are there?

A

12 pairs

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2
Q

What are the 4 differences between spinal and cranial nerves?

A
  • different cranial nerves have different fiber types
  • multiple cranial nerves innervate the same region
  • some cranial nerves lack sensory ganglia
  • cranial nerves have single roots
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3
Q

What functions do special somatic afferent fibers support?

A

vision and hearing

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4
Q

What functions do special visceral afferent fibers support?

A

smell and taste

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5
Q

What area do general somatic afferent innervate?

A

face and mouth

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6
Q

What area do general visceral afferent inervate?

A

pharynx and larynx

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7
Q

What do somatic efferent innervate?

A

skeletal muscle

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8
Q

What is nerve 0?

A

vomeronasal nerve

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9
Q

What is the function of the nerve 0?

A

pheromone detection,

vomeronasal nerve

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10
Q

Where does nerve 0 emerge?

A

cribiform plate

vomeronasal nerve

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11
Q

What fiber type is nerve 0?

A

special visceral afferent SVA

vomeronasal nerve

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12
Q

What is nerve I?

A

olfactory nerve

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13
Q

What is the function of nerve I?

A

smell

olfactory nerve

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14
Q

Where does nerve I emerge?

A

cribiform plate

olfactory nerve

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15
Q

What fiber type is nerve I?

A

special visceral afferent SVA

olfactory nerve

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16
Q

What is nerve II?

A

optic nerve

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17
Q

What is the function of nerve II?

A

vision

optic nerve

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18
Q

Where does nerve II emerge?

A

optic foramen

optic nerve

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19
Q

What fiber type is nerve II?

A

special somatic afferent SSA

optic nerve

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20
Q

What is nerve III?

A

oculomotor nerve

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21
Q

What is the function of nerve III?

A

eye movement and pupil constriction,

oculomotor nerve

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22
Q

Where does nerve III emerge?

A

orbital fissure

oculomotor nerve

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23
Q

What fiber type is nerve III?

A

somatic efferent SE and visceral efferent VE

oculomotor nerve

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24
Q

What is nerve IV?

A

trochlear nerve

25
Q

What is the function of nerve IV?

A

innervates dorsal oblique muscle

trochlear nerve

26
Q

Where does nerve IV emerge?

A

orbital fissure

trochlear nerve

27
Q

What fiber type is nerve IV?

A

somatic efferent SE

trochlear nerve

28
Q

What is nerve V?

A

trigeminal nerve

29
Q

What is the function of nerve V?

A

innervate sensory of face and muscles of mastication

trigeminal nerve

30
Q

What are the 3 division of nerve V and where do they emerge?

A

trigeminal nerve

  • opthalmic nerve (orbital fissure)
  • maxillary nerve (round foramen, alar canal)
  • mandibular nerve (oval foramen)
31
Q

What fiber type is nerve V?

A

general somatic afferent GSA and somatic efferent SE

trigeminal nerve

32
Q

What is nerve VI?

A

abducent nerve

33
Q

What is the function of verve VI?

A

lateral gaze and third eyelid

abducent nerve

34
Q

Where does nerve VI emerge?

A

orbital fissure

abducent nerve

35
Q

What fiber type is nerve VI?

A

somatic efferent SE

36
Q

What is nerve VII?

A

facial nerve

37
Q

What is the function of nerve VII?

A

facial expression, taste, secretion

facial nerve

38
Q

Where does nerve VII emerge?

A

internal acoustic meatus and stylomastoid foramen

facial nerve

39
Q

What fiber type is nerve VII?

A

somatic efferent, visceral efferent, special visceral afferent, general somatic afferent

facial nerve

40
Q

What is nerve VIII?

A

vestibulocochlear nerve

41
Q

What is the function of nerve VIII?

A

hearing and head acceleration

vestibulocochlear nerve

42
Q

Where does nerve VIII emerge?

A

internal acoustic meatus

vestibulocochlear nerve

43
Q

What fiber type is nerve VIII?

A

special somatic afferent SSA

vestibulocochlear

44
Q

What is nerve IX?

A

glossopharyngeal nerve

45
Q

What is the function of nerve IX?

A

taste, saliva, pharynx and middle ear sensation

glossopharyngeal nerve

46
Q

Where does nerve IX emerge?

A

jugular foramen

glossopharyngeal nerve

47
Q

What fiber type is nerve IX?

A

general visceral afferent, special visceral afferent, visceral efferent

glossopharyngeal nerve

48
Q

What is nerve X?

A

vagus nerve

49
Q

What is the function of nerve X?

A

larynx, pharynx, esophagus, thoracic and abdominal viscera

vagus nerve

50
Q

Where does nerve X emerge?

A

jugular foramen

vagus nerve

51
Q

What fiber type is nerve X?

A

somatic efferent, visceral efferent, general visceral afferent, special visceral afferent, general somatic afferent

vagus nerve

52
Q

What is nerve XI?

A

accessory nerve

53
Q

What is the function of nerve XI?

A

neck muscles

accessory nerve

54
Q

Where does nerve XI emerge?

A

jugular foramen

accessory nerve

55
Q

What fiber type is nerve XI?

A

somatic efferent

accessory nerve

56
Q

What is nerve XII?

A

hypoglossal nerve

57
Q

What is the function of nerve XII?

A

tongue muscles

hypoglossal nerve

58
Q

Where does nerve XII emerge?

A

hypoglossal foramen

hypoglossal nerve

59
Q

What fiber type is nerve XII?

A

somatic efferent

hypoglossal nerve

Anatomy Exam 3 (5 decks)

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