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Neurology, Ophthalmology & Otology | Physician Assistant School Study Aid

Cranial Nerves
18 Picmonics to Learn | 20 mins

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Cranial Nerve Function
Sensory
CN I
CN II
CN VIII
Motor
CN III
CN IV
CN VI
CN XI
CN XII
Both
CN V
CN VII
CN IX
CN X
1 min
CN I
Olfactory Nerve
Sensory
Smell
35 secs
CN II
Optic Nerve
Sensory
Vision
35 secs
CN III
Oculomotor Nerve
Motor
Eye Movement
Accommodation
Eyelid Opening
Pupillary Constriction
1 min
CN IV
Trochlear Nerve
Motor
Abducts, Depresses, Internally Rotates
48 secs
CN V
Trigeminal Nerve
Sensory
Facial Sensation
Motor
Mastication Muscles
1 min
CN V Motor Lesion
CN V motor lesion
Jaw Deviates Toward Side of Lesion
Unopposed Force From The Opposite Pterygoid Muscle
Muscles of Mastication
55 secs
CN VI
Abducens Nerve
Motor
Abducts Eye
48 secs
CN VII
Facial Nerve
Lacrimation
Salivation
Sensory
Taste from Anterior 2/3 of Tongue
Motor
Facial Movement
Stapedius Muscle
Eyelid Closing
1 min
Facial Nerve Lesions
Etiology
Diabetes Mellitus
Sarcoidosis
Tumors
Herpes Simplex Virus (HSV)
Bell's palsy
Varicella Zoster Virus (VZV)
Lyme Disease
Treatment
Corticosteroids
Acyclovir
2 mins
CN VIII
Vestibulocochlear Nerve
Sensory
Hearing
Balance
54 secs
CN IX
Glossopharyngeal Nerve
Sensory
Taste from Posterior 1/3 of Tongue
Monitoring Carotid Body and Sinus
Motor
Stylopharyngeus
Swallowing
Salivation
1 min
CN X
Vagus Nerve
Sensory
Aortic Arch Chemoreceptors and Baroreceptors
Taste from Epiglottic Region
Motor
Swallowing
Palate Elevation
Talking
Coughing
Midline Uvula
1 min
CN X Lesion
Uvula Deviation To Contralateral Side
Impaired Gag Reflex
Difficulty Swallowing
Hoarse Voice
Impaired Coughing
Aspiration Pneumonia
2 mins
CN XI
Accessory Nerve
Motor
Head Turning
Shoulder Shrugging
35 secs
CN XI Lesion
Cause/Mechanism
Latrogenic
Clinical Manifestations
Sternocleidomastoid Muscle Paralysis
Trapezius Muscle Paralysis
1 min
CN XII
Hypoglossal Nerve
Motor
Tongue Movement
34 secs
CN XII Lesion (Hypoglossal Nerve)
Medulla
Tongue Deviated Toward Lesion
Paralysis
Fasciculations
Atrophy
1 min

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