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3 Anatomy > Cranial Nerves and Clinical Testing > Flashcards

Cranial Nerves and Clinical Testing Flashcards

1
Q

what nerves come off the pontomedullary junction?

A

CN VI, VII, VIII

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2
Q

what nerve comes off the spinal cord

A

XI

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3
Q

what nerves come off the medulla

A

CN IX, X, XII

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4
Q

olfactory nerve is for..

A

smell

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5
Q

CN I’s foramen

A

cribriform plate of the ethmoid

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6
Q

frontal lobe tumours can affect what nerve?

A

CN I

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7
Q

optic canal contains what structures?

A

optic nerve

opthalmic artery

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8
Q

CNII connects to the CNS via…

A

the diencephalon

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9
Q

foramen for CN II

A

optic canal

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10
Q

test for CN I

A

close eyes and smell something familiar eg coffee/lemon

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11
Q

CN II test?

A

visual tests eg acuity, visual fields, reflexes, fundoscopy, colour blindness test

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12
Q

function of the oculomotor nerve?

A

eye movement

pupil constriction

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13
Q

CN III connects with the CNS at,,,

A

the midbrain

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14
Q

how does CN II get to the orbit?

A

via the lateral wall of the cavernous sinus

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15
Q

CN III’s foramen?

A

SOF

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16
Q

CNIV connects with the CNS at ..

A

the midbrain

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17
Q

only cranial nerve to branch off posteriorly

A

CNIV

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18
Q

cranial nerve with the longest course?

A

trochlear CNIV

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19
Q

how does CNIV get to the orbit?

A

lateral wall of the cavernous sinus

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20
Q

foramen for CNIV

A

SOF

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21
Q

CNVI connects with the CNS at…

A

pontomedullary junction

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22
Q

how does CNVI get to the orbit and why?

A

WITHIN the cavernous sinus close to the internal carotid (most medial in relation to the other cranial nerves)

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23
Q

foramen for CNVI

A

SOF

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24
Q

test for CN III, IV and VI

A

H test for eye movement

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25
Q

how to test IO?

A

patient looks medially and up

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26
Q

foramen for CN VIII

A

IAM

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27
Q

CN VIII’s connection with CNS?

A

pontomedullary junction

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28
Q

test for CNVIII

A

rinne and weber test

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29
Q

CNXI supplies…

A

SCM and trapezius

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30
Q

CNXI’s connection with CNS?

A

cervical spinal cord

31
Q

foramen for CNXI

A

jugular foramen

32
Q

test for CNXI

A

shrug shoulders (trapezius), flex neck and turn neck to other side (SCM, give some resistance)

33
Q

CNS connection for CNXII

A

lateral to the pyramids of the medulla

34
Q

foramen for CNXII

A

hypoglossal canal

35
Q

innervation for CNXII

A

all tongue muscles except palatoglossus (CNX)

36
Q

test for CNXII

A

stick tongue straight out (tongue points toward the side of the injured nerve)

37
Q

CNXII exits __ to the carotid sheath

A

lateral

38
Q

CNV sits inferior to ____ ____ in the cranium

A

tentorium cerebelli

39
Q

foraminae of CNV

A
  1. SOF
  2. foramen rotundum
  3. foramen ovale
40
Q

motor axons for CNV pass through what foramen?

A

foramen ovale

41
Q

CNS connection of CNV

A

pons

42
Q

sensory axons for CNV travel through what foraminae?

A

their respective foraminae eg CNV1’s goes through the SOF

43
Q

tip of the nose supplied by…

A

CNV1

44
Q

upper eyelid is supplied by…

A

CNV1

45
Q

lower eyelid is supplied by…

A

CNV2

46
Q

front portion of ear is supplied by..

A

CNV3, imagine a strap around the side of the whole face

47
Q

nerve for paranasal sinuses

A

CNV1

CNV2 for maxillary sinus only

48
Q

nerve supply to middle cranial fossa

A

CNV3

49
Q

CNV1 covers what cranial fossa

A

anterior and posterior

50
Q

test for CNV3

A

hold chin for resistance and ask patient to open mouth (lateral pterygoid) and close

51
Q

patient who cant dampen sound in their ear may have a problem with what structure and what nerve?

A

tensor tympani

CNV3

52
Q

what nerves control the blink reflex

A

long ciliary nerve - afferent

facial - motor

53
Q

test for CNV

A

touch locations of innervation

for CNV3 test motor too eg jaw opening

54
Q

CNVII connects to CNS at

A

pontomedullary junction

55
Q

CNVII enters temporal bone by ___ and exits the cranium by___

A

IAM

stylomastoid foramen

56
Q

what does the facial canal connect?

A

IAM to stylomastoid foramen

57
Q

chorda tympani carries what functions of the facial nerve?

A

branches for taste and parasympathetic supply to submandibular and sublingual glands

58
Q

chorda tympani hitches a ride with which nerve?

A

lingual nerve (branch of CNV3)

59
Q

test for CNVII, what muscles are being tested here?

A

raise eyebrows - frontalis
close eyes tightly - orbicularis ori
smile - elevators of lips
puff out cheeks and hold air - orbicularis oris

60
Q

CNS connection of CNIX?

A

medulla

61
Q

foramen for CNIX

A

jugular foramen

62
Q

CNIX functions

A 
sensory to pharyngeal mucosa, middle ear and eustachian tube
visceral afferent to carotid body
motor to stylopharyngeus
special sensory to post 1/3 tongue
parasymp to parotid
63
Q

why do people get pain in the back of their through get earache?

A

CNIX supplies sensation to both pharynx and middle ear

64
Q

sensory and motor components of gag reflex?

A 
sensory = CNIX
motor = CNX
65
Q

test for CNIX

A

gag reflex

66
Q

all glands in head are supplied by ___ nerve except…

A

facial

parotid

67
Q

where does CNX branch off medulla in relation to CNIX

A

inferolaterally to CNIX

68
Q

foramen for vagus nerve

A

jugular foramen

69
Q

the vagus nerve’s axons supply structures between which 2 structures?

A

palate and midgut

70
Q

CNX runs down the neck within what structure?

A

carotid sheath

71
Q

CNX becomes the left and right recurrent laryngeal nerves under what structures?

A 
left = arch of aorta
right = under right subclavian artery
72
Q

vagus nerve passes ___ to the lung root

A

posterior

73
Q

test for CNX, what muscles are being tested here?

A

say ahhhh and look at uvula (palate muscles)
ask to swallow (pharyngeal muscles)
ask to speak (laryngeal muscles)

74
Q

uvula deviates __ from the side of dysfunction

A

away

3 Anatomy (20 decks)

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