CRANIAL NERVES and function

I. Olfactory (sensory or motor)

Sensory

II. Optic (sensory or motor)

Sensory

III. Oculomotor (sensory or motor)

Motor

IV. Trochlear (sensory or motor)

Motor

V. Trigeminal (sensory or motor)

Both

VI. Abducens (sensory or motor)

Motor

VII. Facial (sensory or motor)

Both

VIII. Vestibulocochlear (sensory or motor)

Sensory

IX. Glossopharyngeal (sensory or motor)

Both

X. Vagus(sensory or motor)

Both

XI. Accessory (sensory or motor)

Motor

XII. Hypoglossal (sensory or motor)

Motor

Olfactory nerve (number)

I.

Optic nerve (number)

II.

Oculomotor nerve (number)

III.

Trochlear nerve (number)

IV.

Trigeminal nerve (number)

V.

Abducens nerve (number)

VI.

Facial nerve (number)

VII.

Vestibulocochlear nerve (number)

VIII.

Glossopharyngeal nerve (number)

IX.

Vagus nerve (number)

X.

Accessory nerve (number)

XI.

Hypoglossal nerve (number)

XII.

Olfactory function

special sensory; olfaction (smell)

Optic function

special sensory; vision

oculomotor function

sensory: vision

motor: all extrinsic eye muscles, ciliary muscles, constrictor pupillae muscles

trochlear functions

superior oblique muscles

trigeminal function

sensory: face, anterior scalp, conjunctiva, eye bulb, nasal cavity; paranasal sinuses, mucosa, oral cavity; cheeks, teeth, gums, palate

motor: muscles of mastication and other oral / throat muscles

abducens function

lateral rectus muscles

facial function

sensory: taste - anterior 2/3 of tongue; soft palate

motor: muscles of facial expression, glands; parotid, lacrimal, submandibular, sublingual, oral, nasal; pharyngeal mucosal glands

vestibulocochlear function

auditory; special sensory; balance and hearing

glossopharyngeal function

sensory: posterior 1/3 tongue; pharynx

motor: blood vessels in carotid body and sinus

vagus function

sensory: posterior 1/3 tongue

motor: smooth muscles and glands of pharynx, larynx, esophagus, palatoglossal muscles; internal organs: digestion, respiration, heart rate, respiratory rate; reflexes: sneeze, cough, swallow, vomiting; aortic arch: cardiac muscle

Accessory functions

spinal; sternomastoid and trapezius (upper)

hypoglossal function

intrinsic / extrinsic tongue muscles (except palatoglossus)