Neuro_Cranial NNs_Everything other than visual

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Mnemonic to remember which nerves are sensory & which ones are

Some Say Money Matters But My Brother Says Big Boobs Matter More
Menomonic for cranial nerve names

Oh Oh Oh To Touch And Feel Vagina Gives Vinny A Hardon
# for Hypoglossal nn

XII
# for Accessory nn

XI
# for Vagus nn

X
# for Glassophorangeal nn

IX
# for Vestibulocochlear nn

VIII
# for Facial nn

VII
# for Abducens nn

VI
# for Trigeminal nerve

V
# for Trochlear nerve

IV
# for Occulomotor nerve

III
# of Optic nerve

II
# of Olfactory nerve

I
Name of CN I

Olfactory
Name of CN II

Optic
Name for CN III

Occulomotor
Name of CN IV

Trochlear
Name of CN V

Trigeminal
Name of CN VI

Abducens
Name of CN VII

Facial
Name of CN VIII

Vestibulocochlear
Name of CN IX

Glassophorangeal
Name of CN X

Vagus
Name of CN XI

Accessory
Name of CN XII

Hypoglossal
Pathology of CN I - 2
- Anosmia (Loss of smell) - B/L or U/L
- Olfactory hallucinations - present w/seizures
Function of CN I?

Acuity of smell - Use familiar scents (coffee/orange) & test both nostrils independently
Triggeminal neuralgia is relieved by....?

Relaxation
Trigeminal neuralgia & onset

Abrupt
Test for corneal reflex - describe; normal response; which nn is tested?
- Pt look up & away
- PT touches cornea w/tissue
- Both eyes should blink
- Trigeminal nn
Test for jaw jerk reflex - describe; normal & pathological response; which nn is tested?
- Thumb on chin w/hammer on thumb
- Normal - Nothing should happen
- Pathology - Jerk of chin
- Trigeminal nn
Test for mms of mastication

Ask pt to open & close mouth as PT palpates - temporalis & masseter
Test for facial sensation - describe; which nn is tested?
- Cotton ball - light touch
- Sharp item - pin prick
- Hot/cold - T of forehead, cheek, chin
- Trigeminal nn
Functions of CN V - 4
- Facial sensation
- Mms of mastication
- Jaw jerk reflex
- Corneal reflex
- Trigeminal nn
Bell's palsy - define; S/S (6) + Central vs. Peripheral
- Inflammatory response of facial nn (CN VII)
- No pain, just motor paralysis
- Sensory - NORMAL
- Inability to close eye
- Drooping corner of mouth --> salivation
- DEC taste to anterior 2/3 of tongue
- U/L loss of mm of facial expression
- Central - Droop of lower CONTRA face
- Peripheral - Droop of entire IPSI face
Bell's palsy & recovery

Full recovery within weeks-months
Facial nn - common site of damage; leads to what pathology?
- Stylomastoid foramen (between styloid & mastoid process) as nn exits skull
- Pathology - Bell's palsy
Test for mms of facial expression & mm involved - 7
- Frown - Cirrugator supercilli
- Wrinkle nose - Procerus; Nasalis
- Squeeze eyes shut - Orbicularis oculi
- Purse lips - Orbicularis oris
- Wrinkle forehead - Frontalis
- Blowfish kiss - Buccinator
- Smile widely - Zygomaticus major
Function of facial nn - 3
- Mms of facial expression
- Taste to anterior 2/3 of tongue
- Tearing
Diseases w/peripheral vestibulopathy - 5
- BPPV
- Vestibular nuritis
- Labyrintitis
- Menier's disease
- Tumor - Acoustic neuroma
Diseases w/central vestibulopathy - 5
- MS
- Stoke
- TBI
- Tumor
- Ototoxicity
Peripheral vestibulopathy - Nystagmus
- Unidirectional
- Rotary AND linear
- Suppresses w/fixation
- Matches w/vertigo
Central vestibulopathy - Nystagmus
- Direction changing
- Rotary OR linear
- Unable to suppress w/fixation
- Can be separate from vertigo
Test for BPPV & tx

Hallpike-Dix Maneuver
Vestibular pathology of CN VIII - 2
- Benign Paroxismal Positional Vertigo (BPPV)
- Nystagmus/vertigo/loss of focus
Difference between VOR 1 & VOR 2
- PT places finger in front of pt's face
- VOR 1 - pt moves head from side to side
- VOR 2 - (+) finger movement in opposite direction of head movement
DEC function of VOR produces BLURRED VISION
Tests for vestibular of CN VIII - 3
- VOR 1
- VOR 2
- Hallpike-Dix Maneuver
Weber test - tests what? describe
Normal result
Sensorineural vs. conduction hearing loss - where is sound louder for each?
- Test for auditory acuity of Vestibulochoclear nn (CN VIII)
- Tests for lateralization of sound
- Place vibrating fork to center of forehead
- Normal - Sound heard = on both sides
- Sensorineural loss - sound louder in normal ear (sound localizes to opposite ear w/intact nn)
- U/L conduction loss - sound lateralizes/louder in deceased ear
Rhinne test - Normal result
(+) vs (-)
Sensorineural vs. conduction hearing loss
- Normal - Air conduction (fork outside ear) is better than bone conduction (mastoid)
- (+) = AC > BC = sensorineural deafness
- (-) = BC > AC = conductive deafness
Rhinne test - tests what? describe (4 steps); graded how?
- Test for auditory acuity of Vestibulochoclear nn (CN VIII)
- Compares bone conduction (BC) vs. air conduction (AC)
- Vibrating tuning fork is placed against mastoid process
- Pt indicates when sound no longer heard
- Fork is moved to external auditory meatus (near ear)
- Pt states whether sound is heard here
- (+) or (-)
Function of CN VIII
- Auditory acuity - sensorineural vs. conduction hearing loss
- Vestibular
- Vestibulocochlear nn
Pathology of CN IX - gag reflex
- Glassophorangeal nn
- Absent
- Deviation of palate to normal side
Functions of CN IX - 4
- Taste in posterior 1/3 of tongue
- Gag reflex
- Swallowing
- Phonation
- Glassophorangeal nn
Function of CN X - 4
- Vagus nn
- Phonation & Swallowing
- ANS - BP & HR
Function of CN XI
- Accessory nn
- Motor to trapezius & SCM
- SCM - rotate head to L & R
Pathology of CN XII - Central vs. Peripheral
- Peripheral - Tongue deviates TOWARD side of lesion w/atrophy & fibrilations
- Central - Tongue deviates AWAY from side of lesion w/o atrophy or fibrulations
Test for CN XII
- Hypoglossal nn
- Pt sticks out tongue & moves it side to side
Function of CN XII
- Hypoglossal nn
- Tongue movement
Cranial nns responsible for phonation & swallowing - 2
- Vagus nn
- Glassophorangeal nn
Cranial nns responsible for sensation of tongue - 2
- Facial nn (CN VII) - taste to anterior 2/3 tongue
- Glassophorangeal nn (CN IX) - taste to posterior 1/3 tongue

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Neuro_Cranial NNs_Everything other than visual

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Neuro_Cranial NNs_Everything other than visual

Updated

2016-11-30T21:37:48Z

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