Cranial Nerves

Question 1

pure sensory CN

Answer 1

128 Hz

CN 1, 2, 8

Question 2

CN for vagal function

Answer 2

1971 - 10, 9, 7, 11

Question 3

parasympathetic CN

Answer 3

1973 - 10, 9, 7, 3

Question 4

mixed motor and sensory CN

Answer 4

1975 - 10, 9, 7, 5

Question 5

nucleus of solitary tract

Answer 5

SENSORY

7, 9, 10

Question 6

nucleus ambiguus

Answer 6

MOTOR

9, 10, 11

Question 7

CN I testing

Answer 7

olfactory - smell

intro smell then ask pt to close eyes tas one nostrill at a time

1-2 trials

Question 8

absent sense of smell

Answer 8

anosmia

Question 9

dec sense of smell

Answer 9

hyposmia

Question 10

inc sense of smell

Answer 10

hyperosmia

Question 11

distorted sense of smell

Answer 11

dysosmia

Question 12

perception of bad smell

Answer 12

cacosmia

Question 13

smell s any stimulus

Answer 13

parosmia

Question 14

CN II testing

Answer 14

visual acuity
visual field
pupillary light reflex
consensual light reflex

Question 15

visual acuity test

Answer 15

snellen eye chart

14 in for near vision
6 ft for far vision

cover one eye and read downwards kung san mag kamali yung grade is the line above

Question 16

near sightedness

Answer 16

myopia

Question 17

visual field test

Answer 17

testing for peripheral vision - does not need to be malinaw basta kita

cover one eye then place hands lateral to pt then draw hands closer to midline

pt can have good acuity but bad visual field

Question 18

compare glaucoma to scotoma

Answer 18

glaucoma - tunneling, wala peripheral pero ok centran; DM pts

scotoma - wala central kc may dark spot sa center; MS pts

Question 19

pupillary light relfex testing

Answer 19

constriction of ipsi eye when exposed to light - checks EDW of CN III

remove glassess

Question 20

explain abnormal findings in pupillary light reflex testing

Answer 20

non reflex of R eye when exposed to light = oculomotor prob

non reflex of (B) eyes = (R) optic nerve prob of (B) oculomotor prob

Question 21

explain the pupillary light reflex

Answer 21

sensory - optic
motor - oculomotor

light on (R) eye will reach (R) pretectal - (B) EDW - (B) ciliary ganglion - (B) contrictor pupillae = (B) constriciton

Question 22

consensual light reflex testing

Answer 22

(R) eye exposed to light so (L) should also constrict

Question 23

damage to optic nerve

Answer 23

monocular blindness

Question 24

damage to optic chiasm

Answer 24

bitemporal hemianopsia

Question 25

damage to optic tract

Answer 25

homonymous hemianopsia

Question 26

testing for CN III

Answer 26

confontration tests - accomodation reflex

if object is near = constricted
object is far = dialted

Question 27

testing for EOMs

Answer 27

CN III, CN IV, CN VI

all are CN II except
- SO4 and LR6

so pt must not move head while following pt’s fingers using eyes only

Question 28

damage to CN VI effect in vision

Answer 28

horizontal diplopia - 2 nakikita sa L and R

Question 29

damage to CN IV effect in vision

Answer 29

vertical diplopia - 2 nakikita sa taas and baba

Question 30

esotropia

Answer 30

internal strabismus - eyes go medially or inwards

LR6 prob

Question 31

exotropia

Answer 31

external strabismus - eyes go laterally or outwards

MR3 problem

Question 32

unequal pupils

Answer 32

anisocoria

Question 33

constriction of pupils

Answer 33

miosis

Question 34

dilation of pupils

Answer 34

mydriasis

Question 35

far sightedness

Answer 35

presbyopia

Question 36

diplopia

Answer 36

double vision

CN 4 or 6 prob

Question 37

CN V testing

Answer 37

all sensory of face - tests VPM

sensory testing
MMT of muscles of mastication
corneal reflex test
jaw reflex

Question 38

all muscles of mastication elevate the jaw except _____

Answer 38

lat pterygoid - depresses

Question 39

jaw reflex is done on the ______

Answer 39

tendon of mentalis

Question 40

corneal reflex test

Answer 40

most sensitive of CN V

sensort - CN V1
motor - CN VII

wipe cotton on sclera and pt blinks

Question 41

best indicator of CN V damage

Answer 41

(-) corneal reflex and diplopia

Question 42

CN VII testing

Answer 42

all motor of face

MMT of facial muscles
sensation of anterior 2/3 of tounge

Question 43

central paralysis of CN VII

Answer 43

lower quadrant of face - stroke

Question 44

peripheral paralysis of CN VII

Answer 44

whole one side - bell’s

Question 45

MMT of facial muscle tesitng

Answer 45

do facial expressions and resist opening of eyes - CN VII

N, WF, NF, 0

Question 46

ant 2/3 of tounge testing

Answer 46

CN VII

sips of water c salt, sugar

Question 47

CN VIII testing

Answer 47

rinne’s before weber’s - hearing before lateralization

Question 48

compare conductive and sensorinueral hearing loss

Answer 48

conductive - outer and middle ear prob like earwax

sensorineural - inner ear or brain prob

Question 49

rinne’s test

Answer 49

tuning fork on mastoid before ear

compare length of sound of AC and BC

normal - AC > BC
conductive - BC > AC
sensorinueral - AC = BC

Question 50

weber’s test

Answer 50

tuning fork on vertex of skull

normal - central sound or =

conductive - louder on affected side

sensorinueral - no sound is heard on affected; louder on normal side

Question 51

CN IX and CN X testing

Answer 51

gag reflex
swallong and speaking
vagus nerve test

Question 52

gag reflex testing

Answer 52

sensory - CN IX
motor - CN X

use tounge dep on psot mouth

Question 53

swallong and speaking test

Answer 53

pt’s c dysphagia

contra to pt c aspiration and pneumonia

Question 54

vagus nerve testing

Answer 54

soft apalte movement - say AHHHHHH

deviates towards stronger sides

(R) CN X prob = uvuala to the left

Question 55

CN XI testing

Answer 55

MMT of traps and SCM

Question 56

CN XII testing

Answer 56

all muscles of toungue except palatoglossus

protrude toungue - (R) CN VII prob = toungue to R

deviates towards weaker side

Question 57

what nerve supplies the palatoglossus

Answer 57

CN X