Functions

I Olfactory

Smell

II Optic

Vision

III Oculomotor

Eye movement, pupil constriction, raises eyelid

IV Trochlear

Moves the eye downward and inward

V Trigeminal

Facial sensation and chewing

VI Abducens

Moves the eye laterally

VII Facial

Facial expression, taste from anterior 2/3 of tongue, tears and saliva

VIII Vestibulocochlear

Hearing and balance

IX Glossopharyngeal

Taste from posterior 1/3 of tongue, swallowing, saliva

X Vagus

Swallowing, voice, and parasympathetic control of thoracic and abdominal organs

XI Accessory

Moves the head and shoulders

XII Hypoglossal

Tongue movement