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AMK > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

Function of cranial nerve one

A

Smell

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2
Q

What is the name of cranial nerve one?

A

Olfactory

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3
Q

Where does CN1 pass through to leave brain ?

A

Cribriform plate

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4
Q

What is CN2 called?

A

Optic nerve

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5
Q

What does CN2 do?

A

Sensory innervation to retina

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6
Q

Where does CN2 run

A

Optic canal

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7
Q

What is CN3 called?

A

Oculomotor

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8
Q

What does CN3 do

A

MR IR SR IO innervation

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9
Q

CN3 palsy

A

Down and out eye

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10
Q

Where does CN3 run

A

Superior orbital fissure

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11
Q

Name of CN4

A

Trochlear

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12
Q

What does CN4 do ?

A

SO innervation

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13
Q

Where does CN4 run?

A

Superior orbital fissure

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14
Q

Cn4 palsy

A

Diplopia

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15
Q

CN5a name

A

Opthalmic

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16
Q

CN5a function

A

Sensory to scalp forehead and nose

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17
Q

Where does CN5a run?

A

SOF

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18
Q

CN5b name

A

Maxillary

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19
Q

Cn5b function

A

Lower eyelid, upper teeth/lip, cheeks, nasal mucosa, palate

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20
Q

Where does CN5b run

A

Jugular foramen

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21
Q

CN5c name

A

Mandibular

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22
Q

Where does Cn5c run

A

Foramen oval

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23
Q

CN5c function

A

Lower teeth, mandible and ant 2/3 tongue sensory

Mastication motor

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24
Q

Name of Cn6

A

Abducens

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25
Q

Where does CN6 run?

A

SOF

26
Q

Function of CN6

A

LR

27
Q

Cn6 palsy

A

Horizontal diplopia

28
Q

CN8 name

A

Vestibulocochlear

29
Q

Cn8 function

A

Cochlear and auditory apparatus - hearing

30
Q

CN8 palsy

A

Loss of hearing and proprioception, vertigo

31
Q

Where does CN8 run?

A

Internal acoustic meatus

32
Q

CN9 name

A

Glossopharyngeus

33
Q

Where does CN9 emerge

A

Jugular foramen

34
Q

What does glossopharyngeus innervate?

A

Sensory: posterior 1/3 tongue, pharynx, middle ear
Motor: stylopharyneus
Autonomic: salivary glands

35
Q

CN9 palsy

A

loss of gag reflex

36
Q

CN10 name

A

Vagus

37
Q

CN10 palsy

A

Loss of gag reflex
Uvula deviates to opposite side
Hoarse voice

38
Q

Cn10 innervation

A

A: afferents from carotid baroreceptors
M: palate, pharynx, larynx
S: tympanic membrane, external auditory canal and ear

39
Q

CN11 name

A

Spinal accessory

40
Q

Innervation CN11

A

trapezius and SCM

41
Q

Where does CN11 emerge

A

Jugular foramen

42
Q

How to test CN11

A

Shrug shoulders

43
Q

CN12 name

A

Hypoglossal

44
Q

Cn12 emerges from the

A

Hypoglossal canal

45
Q

CN12 function

A

Intrinsic and extrinsic tongue muscles

46
Q

Test CN12

A

Stick out tongue - note deviation

47
Q

CN7 name

A

Facial

48
Q

What does CN7 innervate

A 
S = anterior 2/3 tongue 
M = facial muscle of expression 
A = lacrimation
49
Q

Where does CN7 emerge

A

Internal acoustic meatus

50
Q

Branches of CN7

A

Temporal
Zygomatic
Buccal
Mandibular

51
Q

Afferent nerve of the corneal reflex

A

5a

52
Q

Efferent nerve of the corneal reflex?

A

7

53
Q

Afferent nerve of jaw reflex

A

5c

54
Q

Efferent nerve of jaw reflex

A

5c

55
Q

Afferent nerve of gag reflex

A

9

56
Q

Efferent nerve of gag reflex

A

10

57
Q

Afferent nerve of carotid sinus reflex

A

9

58
Q

Efferent nerve of carotid sinus reflex

A

10

59
Q

Afferent nerve of pupillary light reflex

A

2

60
Q

Efferent nerve of pupillary light reflex

A

3

61
Q

Afferent nerve of lacrimation reflex

A

5a

62
Q

Efferent nerve of lacrimation reflex

A

7

AMK (33 decks)

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