overview cranial nerves

Question 1

name of CN I

Answer 1

Olfactory

Question 2

name of CN II

Answer 2

optic nerve

Question 3

name of CN III

Answer 3

oculomotor nerve

Question 4

name of CN 1V

Answer 4

trochlear nerve

Question 5

name of CN V

Answer 5

Trigeminal nerve

Question 6

name of CN VI

Answer 6

abducens nerve

Question 7

name of CN VII

Answer 7

facial nerve

Question 8

name of CN VIII

Answer 8

vestibulocochlear nerve

Question 9

name of CN IX

Answer 9

glossopharyngeal nerve

Question 10

name of CN X

Answer 10

vagus nerve

Question 11

name of CN XI

Answer 11

accessory nerve

Question 12

name of CN XII

Answer 12

hypoglossal nerve

Question 13

damage to CN I causes;

Answer 13

anosmia - head injury which can result in shearing of olfactory axons

Question 14

damage to CN II causes;

Answer 14

vision affected

Question 15

damage to CN III causes;

Answer 15

droopy eyelid due to nerve palsy, often cos of posterior communicating artery aneurysm, or microvascular insults e.g., can happen in diabetes

Question 16

damage to CN IV causes;

Answer 16

diplopia - double vision when looking down

Question 17

damage to CN V causes;

Answer 17

weak jaw opening
difficulty chewing
facial sensory loss
absence of corneal reflex

Question 18

what is the corneal reflex

Answer 18

when something like a fly touches 1 eye, both eyes blink shut to prevent damage to either

Question 19

damage to CN VI causes;

Answer 19

horizontal diplopia - image appear side by side

Question 20

damage to CN VII causes;

Answer 20

lesions proximal to origin of chorda tympani - lower facial palsy

loss of taste on anterior 2/3 of tongue

Question 21

damage to CN VIII causes;

Answer 21

disruption in balance, due to deafness, tinnitus (ringing noise)

Question 22

damage to CN IX causes;

Answer 22

loss gag reflex

Question 23

which nerve damage often affect one another?

Answer 23

damage to glossopharyngeal nerve IX often occurs jointly with vagus nerve x

Question 24

damage to CN X causes;

Answer 24

dysphagia - swallowing difficulties

articulation disturbances

loss of gag reflex

Question 25

damage to CN XI causes;

Answer 25

weakness in muscles

Question 26

damage to CN XII causes;

Answer 26

weak tongue - issues swallowing, speech isolated damage - rare but may lead to bulbar palsy

Question 27

rhyme to remember CN

Answer 27

Oh Once One Takes The Anatomy Final A Good Vacations Sounds Heavenly.

Question 28

rhyme to remember CN'S nervous systems

Answer 28

Some Say Marry Money But My Brother Says Bad Business Marrying Monetarily. 3,7,9,10 parasympathetic

Question 29

what number is IV, V, VI, IX, X, XI,

Answer 29

iv = 4 v = 5 vi = 6 ix = 9 x = 10 xi = 11