HA EXAM 2 - Cranial Nerves

CN I

Olfactory - sensory (smell)

CN II

Optic - sensory (vision)

CN III

Oculomotor - motor (most eye movements, pupil constriction, raises eyelid)

CN IV

Trochlear - motor (superior oblique; eye moves down and in)

CN V

Trigeminal - both (facial sensation, muscles of mastication; TMJ strength test)

CN VI

Abducens - motor (lateral eye movement)

CN VII

Facial - both (facial expression, taste anterior 2/3 of tongue)

CN VIII

Vestibulocochlear (acoustic) - sensory (hearing and balance)

CN IX

Glossopharyngeal - both (taste posterior 1/3 of tongue, swallowing, gag reflex)

CN X

Vagus - both (swallowing, voice, parasympathetic to organs, gag reflex)

CN XI

Spinal accessory - motor (shrug shoulders, turn head)

CN XII

Hypoglossal - motor (tongue movement)

Mnemonic for CN names

Oh Oh Oh To Touch And Feel Very Good Velvet Such Heaven

Mnemonic for CN function (S/M/B)

Some Say Marry Money, But My Brother Says Big Brains Matter More

Which CN affected by uncal herniation?

CN III - causes dilated nonreactive pupil

Which CN is tested with jaw movement against resistance?

CN V (trigeminal)

Which CN is tested with Weber/Rinne?

CN VIII

Which CN is tested with a shoulder shrug / head turn against resistance?

CN XI

Which CN is tested by sticking out the tongue?

CN XII

Which CN is tested with visual acuity and visual fields?

CN II