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PNS #1 > 1: U1 CN's > Flashcards

1: U1 CN's Flashcards

1
Q

What is CN I?

A

olfactory nerve

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2
Q

What is CN II?

A

optic nerve

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3
Q

What is CN III?

A

oculomotor nerve

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4
Q

What is CN IV?

A

trochlear nerve

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5
Q

What is CN V?

A

Trigeminal nerve

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6
Q

What is CN VI?

A

Abducens (abducent) nerve

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7
Q

What is CN VII?

A

facial nerve

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8
Q

What is CN VIII?

A

vestibulocochlear nerve

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9
Q

What is CN IX?

A

glossopharyngeal nerve

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10
Q

What is CN X?

A

vagus nerve

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11
Q

What is CN XI?

A

accessory (spinal accessory) nerve

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12
Q

What is CN XII?

A

hypoglossal nerve

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13
Q

What is the olfactory CN classified as?

A

special sensory

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14
Q

How do the olfactory CN fibers travel?

A

fibers in the olfactory mucosa traverse the cribriform plate and synapse in the olfactory bulb

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15
Q

What is the optic CN (II) classified as?

A

special sensory

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16
Q

How do the optic CN (II) fibers travel?

A

from retina, converge on optic disc, carried to optic nerve, chiasma and tract to the LATERAL GENICULATE BODIES

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17
Q

What is the oculomotor CN (III) classified as?

A

motor; somatic and parasympathetic

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18
Q

What does the oculomotor CN supply?

A

5 somatic muscles, 2 visceral smooth muscles

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19
Q

What is the trochlear CN (IV) classified as?

A

somatic motor

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20
Q

What muscle does the trochlear CN supply?

A

superior oblique

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21
Q

What is the smallest cranial nerve?

A

the trochlear CN (IV)

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22
Q

What is the apparent origin of CN IV (trochlear)?

A

posterior brain stem

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23
Q

How is the Trigeminal CN (V) classifed?

A

mixed; somatic motor and sensory

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24
Q

What is the nickname for the trigeminal CN (V)?

A

“Great sensory nerve of the face”; including: orbit, nasal cavity and paranasal sinuses, oral cavity, ear, and internal skull

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25
Q

What is the largest CN?

A

trigeminal (V) CN

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26
Q

What does the motor supply of CN V (trigeminal) supply?

A

muscles of mastication

27
Q

How is CN VI (abducent) classified?

A

somatic motor

28
Q

What does the abducent nerve supply?

A

the lateral rectus

29
Q

How does the lateral rectus muscle move the eyes?

A

turns eyes laterally to the side

30
Q

How is the facial CN (VII) classified?

A

mixed; motor: somatic and parasympathetic

sensory: somatic and special

31
Q

What is a nickname for CN VII (Facial)?

A

nerve of facial expression

32
Q

What does the facial nerve carry?

A

taste from the anterior 2/3 of the tongue

33
Q

What muscles does the facial nerve supply?

A

muscles of facial expression: stylohyoid and stapedius

34
Q

What glands are supplied by the facial CN?

A

lacrimal and salivary glands

35
Q

How is the vestibulocochlear CN (VIII) classified?

A

special sensory: hearing and equillibrium

36
Q

Where does the vestibulocochlear CN get its sensory info from?

A

cochlea and vestibule (nerves)

37
Q

How is the glossopharyngeal CN (IX) classified?

A

mixed

motor: branchiomotor and parasympathetic
sensory: somatic, special, and visceral

38
Q

What does CN IX (glossopharyngeal) carry?

A

taste from the posterior 1/3 of tongue

39
Q

What does the glossopharyngeal CN motor supply?

A

stylopharyngeus

40
Q

What is the parasympathetic supply of CN IX (glossopharyngeal) to?

A

parotid gland

41
Q

How is CN X (vagus) classified?

A

mixed

motor: branchiomotor and parasympathetic
sensory: somatic, special, and visceral

42
Q

What is the longest CN?

A

vagus (X)

43
Q

What does the motor supply of the vagus (X) CN to?

A

pharyngeal constrictors

44
Q

What is the parasympathetic supply of the Vagus (X) CN?

A

bronchi, heart, GI tract (esophagus to distal 1/3 of transverse colon)

45
Q

What is the classification of accessory (spinal accessory) XI CN?

A

motor

46
Q

What parts make up CN XI (spinal accessory)?

A

cranial and spinal parts

47
Q

What does the spinal accessory (CN XI) supply?

A

muscles of the larynx, pharynx, and palate (Cranial)

trapezius and sternocleidomastoid muscles (spinal)

48
Q

How is CN XII (hypoglossal) classified?

A

motor

49
Q

What muscles does CN XII (hypoglossal) supply?

A

intrinsic and extrinsic muscles of the tongue

50
Q

Where does CN I exit?

A

cribriform plate of ethmoid bone

51
Q

Where does CN II exit?

A

optic canal

52
Q

Where does CN III exit?

A

superior orbital fissure

53
Q

Where does CN IV exit?

A

superior orbital fissure

54
Q

Where does CN V1 exit?

A

superior orbital fissure

55
Q

Where does CN V2 exit?

A

foramen rotundum

56
Q

Where does CN V3 exit?

A

foramen ovale

57
Q

Where does CN VI exit?

A

superior orbital fissure

58
Q

Where does CN VII exit?

A

internal acoustic meatus

59
Q

Where does CN VIII exit?

A

internal acoustic meatus

60
Q

Where does CN IX exit?

A

jugular foramen

61
Q

Where does CN X exit?

A

jugular foramen

62
Q

Where does CN XI exit?

A

jugular foramen

63
Q

Where does CN XII exit?

A

hypoglossal canal

PNS #1 (14 decks)

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