12 Cranial Nerves & their functions

Olfactory

I

Sense of smell

Optic

II

Vision

Oculomotor

III

Eye/eyelid control, pupil, lens shape M (eye movements)

Trochlear

IV

Eye movement, superior oblique M

Trigeminal

V

Chewing, sensation for face, scalp, and teeth

Abducens

VI

Lateral eye movement, lateral rectus (eye movement)

Facial

VII

Facial expression, salivation, taste, tears

Vestibulocochlear

VIII

Hearing and equilibrium (balance/orientation)

Glossopharyngeal

IX

Salivation, taste, swallowing movements, sensations of throat

Vagus

X

sensations of throat and larynx and of thoracic and abdominal organs; swallowing, voice production, slowing of heart beat, acceleration of peristalsis (gut movement)heartbeat

Accessory (Also known as "Spinal Accessory")

XI

shoulder movements; turning movements of head

Hypoglossal

XII

Tongue movements, speech, swallowing

Olfactory

(conduct impulses)

From nose to brain

Optic

(conduct impulses)

From eye to brain

Oculomotor

(conduct impulses)

From brain to eye muscles

Trochlear

(conduct impulses)

From brain to external eye muscles

Trigeminal

(conduct impulses)

From skin and mucous membrane of head and from teeth to brain; also from brain to chewing muscles

Abducens

(conduct impulses)

From brain to external eye muscles

Facial

(conduct impulses)

From taste buds of tongue to brain; from brain to face muscles

Vestibulocochlear

(conduct impulses)

From ear to brain

Glossopharyngeal

(conduct impulses)

From throat and taste buds of tongue to brain; also from brain to throat muscles and salivary glands

Vagus

(conduct impulses)

From throat, larynx, and organs in thoracic and abdominal cavities to brain; also from brain to muscles of throat and to organs in thoracic and abdominal cavities

Acessory

(conduct impulses)

From brain to certain shoulder and neck muscles

Hypoglossal

(conduct impulses)

From brain to muscles of tongue