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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
how to test IO?
patient looks medially and up
26
foramen for CN VIII
IAM
27
CN VIII's connection with CNS?
pontomedullary junction
28
test for CNVIII
rinne and weber test
29
CNXI supplies...
SCM and trapezius
30
CNXI's connection with CNS?
cervical spinal cord
31
foramen for CNXI
jugular foramen
32
test for CNXI
shrug shoulders (trapezius), flex neck and turn neck to other side (SCM, give some resistance)
33
CNS connection for CNXII
lateral to the pyramids of the medulla
34
foramen for CNXII
hypoglossal canal
35
innervation for CNXII
all tongue muscles except palatoglossus (CNX)
36
test for CNXII
stick tongue straight out (tongue points toward the side of the injured nerve)
37
CNXII exits __ to the carotid sheath
lateral
38
CNV sits inferior to ____ ____ in the cranium
tentorium cerebelli
39
foraminae of CNV
1. SOF 2. foramen rotundum 3. foramen ovale
40
motor axons for CNV pass through what foramen?
foramen ovale
41
CNS connection of CNV
pons
42
sensory axons for CNV travel through what foraminae?
their respective foraminae eg CNV1's goes through the SOF
43
tip of the nose supplied by...
CNV1
44
upper eyelid is supplied by...
CNV1
45
lower eyelid is supplied by...
CNV2
46
front portion of ear is supplied by..
CNV3, imagine a strap around the side of the whole face
47
nerve for paranasal sinuses
CNV1 | CNV2 for maxillary sinus only
48
nerve supply to middle cranial fossa
CNV3
49
CNV1 covers what cranial fossa
anterior and posterior
50
test for CNV3
hold chin for resistance and ask patient to open mouth (lateral pterygoid) and close
51
patient who cant dampen sound in their ear may have a problem with what structure and what nerve?
tensor tympani | CNV3
52
what nerves control the blink reflex
long ciliary nerve - afferent | facial - motor
53
test for CNV
touch locations of innervation | for CNV3 test motor too eg jaw opening
54
CNVII connects to CNS at
pontomedullary junction
55
CNVII enters temporal bone by ___ and exits the cranium by___
IAM | stylomastoid foramen
56
what does the facial canal connect?
IAM to stylomastoid foramen
57
chorda tympani carries what functions of the facial nerve?
branches for taste and parasympathetic supply to submandibular and sublingual glands
58
chorda tympani hitches a ride with which nerve?
lingual nerve (branch of CNV3)
59
test for CNVII, what muscles are being tested here?
raise eyebrows - frontalis close eyes tightly - orbicularis ori smile - elevators of lips puff out cheeks and hold air - orbicularis oris
60
CNS connection of CNIX?
medulla
61
foramen for CNIX
jugular foramen
62
CNIX functions
``` 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
why do people get pain in the back of their through get earache?
CNIX supplies sensation to both pharynx and middle ear
64
sensory and motor components of gag reflex?
``` sensory = CNIX motor = CNX ```
65
test for CNIX
gag reflex
66
all glands in head are supplied by ___ nerve except...
facial | parotid
67
where does CNX branch off medulla in relation to CNIX
inferolaterally to CNIX
68
foramen for vagus nerve
jugular foramen
69
the vagus nerve's axons supply structures between which 2 structures?
palate and midgut
70
CNX runs down the neck within what structure?
carotid sheath
71
CNX becomes the left and right recurrent laryngeal nerves under what structures?
``` left = arch of aorta right = under right subclavian artery ```
72
vagus nerve passes ___ to the lung root
posterior
73
test for CNX, what muscles are being tested here?
say ahhhh and look at uvula (palate muscles) ask to swallow (pharyngeal muscles) ask to speak (laryngeal muscles)
74
uvula deviates __ from the side of dysfunction
away

3 Anatomy (20 decks)

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