cranial nerves Flashcards
name cranial nerve I?
function?
Olfactory
Smell
name cranial nerve II?
function?
-3
Optic nerve
visual acuity
visual fields
accommodation
pupil size
name cranial nerve III?
function?
Oculomotor
Eye movements
raise eyelid
constrict pupillae
name cranial nerve IV?
eye muscle innervated?
function?
trochlear
superior oblique muscle
take eye down and in
name cranial nerve V?
functions?
-4
Trigeminal
sensation to face
sensation to ant 2/3 tongue
muscles of chewing
corneal reflex
name cranial nerve VI?
eye muscle innervated?
function?
abducens
lateral rectus muscle
move eye laterally
name cranial nerve VII?
functions?
-4
Facial nerve
move muscles of face Ant 2/3 of tongue taste make tears salivation stapedius muscle
name cranial nerve VIII?
function?
Vestibulocochlear
hearing
name cranial nerve IX?
functions?
-3
Glossopharyngeal
post. 1/3 of tongue taste
swallowing
salivation
name cranial nerve V?
functions?
-3
Vagus
swallowing
vocalisation
sensation to organs
name cranial nerve VI?
muscles innervated?
functions?
Accessory nerve
sternocleidomastoid muscle
trapezius
head rotation
shoulder elevation
name cranial nerve VII?
function?
Hypoglossal nerve
Move tongue
which cranial nerves allow salivation?
and through autonomic nervous system (ANS)?
Facial nerve
Glossopharyngeal
PNS
which cranial nerves allow tongue taste to posterior 1/3rds?
Glossopharyngeal
constriction of pupillae occurs through what autonomic nervous system?
PNS
tear production occurs through what autonomic nervous system?
PNS
which cranial nerve allows hearing?
Vestibulocochlear
which cranial nerves are entirely motor?
give roman numerals and
full names,
III, IV, VI, XI, and XII
Occulomotor Trochlear nerve Abducens Accessory nerve Hypoglossal nerve
which cranial nerves are entirely sensory?
give roman numerals and
full names,
I, II, and VIII
Olfactory nerve
Optic nerve
Vestibulocochlear
which cranial nerves are sensory and motor?
V, VII, IX, X
Trigeminal nerve
Facial nerve
Glossopharyngeal
Vagus nerve
pneumonic to remember names and order of cranial nerves?
Ooh, Ooh, Ooh, to touch and feel very good velvet. Such heaven!
pneumonic to remember which cranial nerves and sensory/motor or both?
Some say marry money but my brother says big brains matter more
which cranial nerves pass through Jugular foramen?
9 10 11
which cranial nerves pass through hypoglossal canal?
- name and number
12
Hypoglossal nerve
which cranial nerves passes through the cribriform plate?
- name and number
1
Olfactory nerve
memory device to remember which cranial nerves pass through which area of the brain?
COSIJH 114231
CNII pass through what hole in the brain?
Optic canal
which cranial nerves pass through the superior orbital fissure?
- name and number
3 4 5 6
Occulomotor nerve
Trochlear nerve
Trigeminal
Abducens
CNVII and CNVIII pass through what hole in the brain?
name these nerves?
Intra acoustic foramen
Facial nerve
Vestibulocochlear
Trigeminal is split into what 3 areas?
V1, V2, V3
ptosis can be caused by damage to what cranial nerve?
3, occulomotor
how do you test olfactory nerve?
ask about any changed in smell?
what things are tested under optic nerve and how is each tested?
-6
- Acuity
- Visual fields
- Pupillary Reflexes
- Accommodation
- Fundoscopy.
- Blind spot
how is acuity tested?
-2
- Snellen chart
- Ishihara plates. Few secs per plate
how are visual fields tested?
- cover eye and move finger from outside to inside
when doing fundoscopy which drug do you use to dilate pupil?
tropicamide
how do you test eye movements?
H
what is it called when eyes point in different directions?
what nerves could be effected to cause this?
Strabismus
III IV VI
medical word for dancing eyes?
nystagmus
involuntary rhythmic movement of the eye.
medical word for?
how do you test for this?
what nerves could be effected to cause this?
nystagmus
Stop in middle of H to detect nystagmus
III IV VI
define Diplopia?
what nerves could be effected to cause this?
double vision
III IV VI
how can you test motor functions of trigeminal nerve?
-3
Move jaw side to side
Tense temple + Jaw
Corneal reflex. Jaw jerk.
Corneal reflex controlled by what nerve?
trigeminal nerve?
how can you test sensory functions of trigeminal nerve?
Cotton wool and prick test on v1, v2, v3
Hz for tuning fork test?
512Hz
where do you put tuning fork in Weber’s?
middle of forehead
where do you put tuning fork in Rinne’s?
mastoid bone
normal result for Rinne’s test?
air>bone
name of test to check semi-circular canals of fluid?
which nerve is being tested?
what function of this nerve is being testd?
Romberg’s test
Vestibulocochlear
balance
fasciculation are caused by impairment to what cranial nerve?
name and number?
Hypoglossal
XII
how do you test Facial nerve motor function?
-3
Raise eyebrows, puff cheeks, smile
you’re testing facial nerve.
in normal function what will be accentuated on raising eyebrows which shows you CN7 is functioning normally?
forehead creases
you’re testing facial nerve.
in normal function what will be accentuated on smiling which shows you CN7 is functioning normally?
Nasolabial folds
there is a X lesion .
where does uvula deviate?
uvula does not deviate
there is a IX lesion .
where does uvula deviate?
IX, is what cranial nerve?
uvula deviates away from affected side
Glossopharyngeal
how to test Accessory nerve?
shrug shoulder
turn head
how to test Hypoglossal nerve?
on doing above test what extra thing should you be looking for which if present shown nerve is abnormal?
stick tongue out
move togngue side to side
say la la la
Fasciculation
pt has tongue fasciculations.
what nerve is effected?
Hypoglossal nerve
Hypoglossal nerve has a lesion.
will it move towards or away from affected side?
deviates towards affected side
Olfactory nerve impaired.
what symptom arises?
Anosmia
trigeminal nerve impaired.
what symptoms + signs arise?
-3
Less facial sensation
Weakness on chewing
how do you test CNVIII?
which nerve is this?
Whispering
Tuning fork tests
Romberg’s test
Vestibulocochlear
oculomotor takes info tpo what muscles to pupils dilate or constrict?
ciliary muscles
give pathway for how optic nerve takes info to brain?
ON –> Optic chiasma –> optic tract –> lateral geniculate nucleus in thalamus –> O radiation –> visual cortex
what are the only two CN’s that do not come from the brainstem?
optic nerve
olfactory nerve
which nerves comes from midbrain?
CN3 and CN4
