Neuroanatomy Revision Night: Cranial Nerves

Question 1

how many cranial nerves are above the pons

Answer 1

4

Question 2

how many cranial nerves are in the medulla?

Answer 2

4

Question 3

what is the olfactory nerve “called” before it goes through the cribriform plate

Answer 3

bulb

tract

Question 4

olfactory dysfunction is associated with…

Answer 4

epilepsy/seizures

aura of migraine

Question 5

the fibres posterior to the optic chiasm are called…

Answer 5

optic tract

Question 6

when does a junctional scotoma appear?

Answer 6

transection of a nerve very close to the optic chiasm;

monocular blindness with a little bit of temporal involvement

Question 7

optic tract visual pathology?

Answer 7

homonymous hemianopia

Question 8

why is there macular sparing in a posterior visual problem?

Answer 8

the part of the visual cortex that supplies the macula has blood supply from posterior and middle cerebral arteries

Question 9

H test tests for cranial nerves…

Answer 9

3
4
6

Question 10

what nerve fibres does CN3 carry

Answer 10

somatic motor

parasympathetics

Question 11

problems with what arteries can cause a problem with CN3

Answer 11

posterior cerebral artery

superior cerebellar artery

Question 12

down and out eye…

Answer 12

CN3 palsy

Question 13

CN4 moves the eye..

Answer 13

down and in

Question 14

only nerve that emerges dorsally is….

Answer 14

CN4

Question 15

head tilt and vertical diplopia…

Answer 15

CN4 palsy

Question 16

“i get double vision when i walk down the stairs”….

Answer 16

CN4 palsy

Question 17

where does CN6 emerge from

Answer 17

in between pons and medulla

Question 18

what visual problem can you get in CN6 problems

Answer 18

horizontal diplopia

Question 19

angle of the mandible is supplied by what nerve?

Answer 19

great auricular nerve

Question 20

cavernous sinus thrombosis/infection will cause problems where?

Answer 20

OTOM CAT
oculomotor
trochlear
ocu

Question 21

motor facial nerve function?

Answer 21

facial muscles

Question 22

special sensory function of facial nerve

Answer 22

ant 2/3 tongue taste

Question 23

parasympathetic function of facial nerve

Answer 23

submandibular
sublingual
lacrimal

Question 24

name the only salivary gland not innervated by CN7? what nerve supplies it?

Answer 24

parotid

CNIX

Question 25

what ganglion does the facial nerve form?

Answer 25

geniculate ganglion

Question 26

facial nerve exits the cranial cavity via…

Answer 26

stylomastoid foramen

Question 27

causes of facial nerve palsy?

Answer 27

parotid gland tumours (passes by parotid)
herpes infection
compression during forceps
bells palsy

Question 28

cochlear component of CN8 arises from…

Answer 28

inferior cerebellar peduncle

Question 29

what nerve comes from the cerebello-pontine angle?

Answer 29

CN8

Question 30

symptoms of vestibular neuritis?

Answer 30

vertigo
nystagmus
loss of equilibrium

Question 31

symptoms of labyrinthitis

Answer 31

hearing loss
tinnitus
vertigo
nystagmus

Question 32

sensory and motor supply to the carotid body and sinus

Answer 32

S - CNIX

M- CN10

Question 33

what controls taste at the back of the tongue?

Answer 33

vagus

Question 34

nerve supply to epiglottis?

Answer 34

vagus

Question 35

vagus innervates GI tract up to….

Answer 35

up to splenic flexure

Question 36

right recurrent laryngeal nerve hooks under…

Answer 36

right subclavian artery

Question 37

name the 2 portions of CNXI

Answer 37

cranial

spinal

Question 38

name the entry and exit route of CNXI

Answer 38

foramen magnum

jugular foramen

Question 39

cranial portion of CNXI exits via..

Answer 39

jugular foramen