Cranial NN Flashcards
I
olfactory
II
optic
III
oculomotor
IV
trochlear
V
trigeminal
VI
abducens
VII
facial
VIII
vestibulocochlear
IX
glossopharyngeal
X
Vagus
XI
Accessory
XII
hypoglossal
is olfactory S or M
S
is optic S or M
S
is oculomotor S or M
M
is IV S or M
M
is trigeminal S or M
both
is VI S or M
M
is VII S or M
Both
is vestibulococlear S or M
S
is IX S or M
both
is Vagus S or M
both
is Accessory S or M
M
is XII S or M
M
fxn of I
olfactory- smell
fxn of II
optic- vision
fxn of III
Occulomotor- Everything in eye except closes, abduct and cry! moves eyes up, down, medially, raise upper eyelid, constrict pupil, adjust lens shape
fxn of IV
troclear- moves eyes medially and down simultaneously
fxn of V
trigeminal- facial sensation, chewing, TMJ sensation
fxn of VI
abducens- abducts eye
fxn of VII
facial- ( this nerve lets u enjoy ur double choc. fudge brownie that u treat urself to after u’ve been sad and cried ur eyes out) facial expression, closes eye, tears, salivation, taste
fxn of VIII
vestibulocochlear- sensation of the position of head relative to gravity, head movement sensation, hearing
fxn of IX
glossopharyngeal- (taste and swallow food) swallowing, salvation, taste
fxn of X
Vagus- (think ur stomach is queasy bc ur about to give a speech at CSM in Vegas, u can taste the bile in ur throat, u swallow hard and start talking) regulates viscera, swallowing, speech, taste
fxn of XI
accessory- elevates shoulders, turns head
fxn of XII
hypoglossal- (the last piece to speaking and eating) moves tongue
which CNs control swallowing
Vagus, glossopharyngeal
which CNs do u need for the diff parts of eating?
Trigeminal- chewing and sensation from TMJ
Facial- salivation and taste
glossopharyngeal- swallowing, salivation, taste
Vagus- swallowing, speech, taste
hypoglossal- moves tongue
where does the olfactory N originate?
inferior frontal lobe
where does the optic nerve originate
diencephalon
where does teh oculomotor nerve originate
midbrain
where does the troclear nerve originate?
midbrain
where does the trigeminal nerve originate
pons
where does teh abducens N originate
inf. pons- between pons and medulla
where does the facial nerve originate
inf. pons - tween pons and medulla
where does the vestibulocochlear nerve originate
inf. pons- tween pons and medulla
where does teh glossopharyngeal nerve originate
medulla
where does the vagus nerve originate?
medulla
where does the accessory nerve originate
spinal cord and medulla
where does the hypoglossal nerve originate?
medulla
which CNs originate on the inf. pons, between the pons and medulla?
VI, VII, VIII
abducens, facial, vestibulocochlear
which CNs originate in the midbrain?
III, IV
oculomotor and trochlear
which CNs originate on the medulla?
IX,X, XI, XII
glossopharyngeal, vagus, accessory, hypoglossal
which CN originates on the diencephalon?
optic (II)
which CN originates on the inferior frontal lobe?
olfactory (I)
which CN originates on the pons
trigeminal (V)
how do u test the olfactory nerve
have pt identify a susbstance by smelling it, isolate each nostril
how do u test the optic N
vision chart and pupillary reflex (sensory)
how do u tests the oculomotor N?
H test to tract finger, check that eyelids open equally, pupillary reflex (motor portion)
how do u test the trochlear N
track finger to look at tip of nose
how do u test the trigeminal N
sensation of face, corneal reflex (sensory), masseter reflex
how do u test abducens N?
track finger to the side
how do u test facial N?
facial expressions, corneal reflex (motor portion)
how do u test vestibulocochlear N?
vest. function, hearing
how do u test glossopharyngeal N?
gag reflex (sensory portion)
how do u test Vagus N?
have pt say “ahh” (look for equal and bilateral soft palate rising), gag reflex (motor component)
how do u test the accessory N?
MMT the upper trap and SCM
how do u test the hypoglossal N?
have pt stick tongue out, if any probs, tongue will deviate towards the damaged side.
