Cranial Nerves:
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There are 12 pairs of cranial nerves.   Olfactory I   Optic II   Oculomotor III   Trochlear IV   Trigeminal V   Abducens VI   Facial VII   Auditory (vestibulocochlear) VIII   Glossopharyngeal IX   Vagus X   Spinal Accessory XI   Hypoglossal XII To help memorize each, a mnemonic is often used by students such as . . . "On Old Olympic Towering Tops A Finn And German Viewed Some Hops"

Cranial Nerve:        Major Functions: I Olfactory        smell II Optic        vision III Oculomotor        eyelid and eyeball movement IV Trochlear        innervates superior oblique turns eye downward and laterally V Trigeminal        chewing face & mouth touch & pain VI Abducens        turns eye laterally VII Facial        controls most facial expressions secretion of tears & saliva taste VIII Vestibulocochlear (auditory)        hearing equillibrium sensation IX Glossopharyngeal        taste senses carotid blood pressure X Vagus        senses aortic blood pressure slows heart rate stimulates digestive organs taste XI Spinal Accessory        controls trapezius & sternocleidomastoid controls swallowing movements XII Hypoglossal        controls tongue movements