Key concepts: Cranial nerve function

Question 1

which cranial nerves emerge from the midbrain

Answer 1

3 and 4
oculomotor and trochlear
have their respective nuclei here

Question 2

which cranial nerves emerge from the pons

Answer 2

5, trigeminal emerges in basal pons and have 2 nuclei here
6,7,8 (abducens, facial, vestibulocochlear) from the pontomedullary junction and nuclei are here

Question 3

which cranial nerves emerge from the medulla

Answer 3

9,10,12 (glossopharyngeal, vagus, hypoglossal)
emerge from the medulla and all nuclei are associated here

Question 4

which cranial nerves emerge from the upper cervical spinal cord

Answer 4

11, accessory spinal
then into the skull via the foramen magnum

Question 5

cranial nerve functions

Answer 5

either have sensory motor or both

Question 6

how to remember the function of the cranial nerves

Answer 6

some
say
my
mother
buys
my
brother
sex
bots
because
mother
masturbates

Question 7

function olfactory

Answer 7

smell

Question 8

function optic

Answer 8

vision

Question 9

function oculomotor

Answer 9

eye movement: eyelid elevation, pupillary constriction, lens accommodation

Question 10

function trochlear

Answer 10

eye movement

Question 11

function trigeminal

Answer 11

sensory: facial V1,2,3 provide sensation to anterior 2/3 of tongue
motor: mastication

Question 12

function abducens

Answer 12

eye movement

Question 13

function facial

Answer 13

sensory: taste on anterior 2/3
motor: facial expression, eye closing, salivation, lacrimation

Question 14

function vestibulocochlear

Answer 14

balance and hearing

Question 15

function glossopharyngeal

Answer 15

sensory:taste posterior 1/3 and tongue sensation in same place, pharynx sensation, chemo baroreceptors
motor: swallowing and salivation

Question 16

function vagus

Answer 16

sensory: ear, skin, pharynx, larynx, thorax, abodomen, taste/ sensation, epiglottis
motor: swallow, speech, cough, decrease HR, increase gut motility, sweating

Question 17

function accessory spinal

Answer 17

shoulder shrug
head turn

Question 18

function hypoglossal

Answer 18

tongue movement