Cranial nerves

I

olfactory; sense of smell; sensory

II

optic; vision; sensory

III

oculomotor; eye/eyelid control; pupil contraction; lens shape; motor

IV

trochlear; eye movement by superior oblique (looking downward); motor

V

trigeminal; facial sensation; control chewing muscles; both

VI

abducens; lateral eye movement by lateral rectus; motor

VII

facial; facial expression, salivation, taste, tears; both

VIII

vestibulocochlear; hearing and balance/orientation; sensory

IX

glossopharyngeal; salivation, taste, swallowing; both

X

vagus; visceral (smooth) muscle movement; both

XI

accessory; controlling the muscles of the neck; motor

XII

hypoglossal; tongue movements; speech, swallowing; motor