There are 12 pairs of cranial nerves:

Olfactory (I)smell

NOTE: The Olfactory Nerves extend as individual nerve fibers from the olfactory sensory receptors in the nasal cavity through the base of the cranium to form synpatic connections in the Olfactory Bulbs. Do not make the common mistake of confusing the Olfactory Nerves with the Olfactory Bulbs or the Olfactory Tracts!

Optic (II)vision
Oculomotor (III)control of eyelid (open) & eyeball movement
Trochlear (IV)turns opposite eye down
(superior oblique)
Trigeminal (V)chewing
touch & pain of face & mouth
Abducens (VI)turns eye out
(lateral rectus)
Facial (VII)facial expressions
secretion of tears & saliva
taste (anterior 2/3 of tongue)
cutaneous sensation from ear
control of eyelid (close)
control of stapedius muscle (middle ear)
Vestibulocochlear (VIII)hearing
equilibrium sensation
Glossopharyngeal (IX)taste (back of tongue)

palate & pharynx sensation
senses carotid blood pressure
motor to pharynx
Vagus (X)senses aortic blood pressure
slows heart rate
stimulates digestive organs
taste from epiglottis
motor to palate, pharynx & larynx
Spinal Accessory (XI)control of shoulder muscles
control of swallowing movements
Hypoglossal (XII)control of tongue movements