Cranial Nerves

• originate from Brainstem and innervate muscles of the head, neck, face, tongue, larunx, pharunc, and glands
• important for sensory Perception, speech, motor functions
• 12 pairs
• numbered with roman numberals ( CN I - CN XII )
• Each has a special function ( no way )

Number	Name	Major motor function	Major sensory function	Mnemonic
CN I	Olfactory Nerve		Smell	On
CN II	Optic Nerve		Vision	Old
CN III	Oculomotor Nerve	Eye movement		Olympus’s
CN IV	Trochlear Nerve	Eye movement		Topmost
CN V	Trigeminal Nerve	Chewing	Sensation: face, eyes, mouth	Top
CN VI	Abducens Nerve	Eye movement		A
CN VII	Facial Nerve	Facial expression; secretion of saliva and tears	Taste	Finn
CN VIII	Vestibulocochlear Nerve (acoustic)		Equilibrium, hearing	And
CN IX	Glossopharyngeal Nerve	Swallowing	Taste	German
CN X	Vagus Nerve	Speaking, swallowing	Sensation: thorax, abdomen	Viewed
CN XI	Accessory Nerve	Head movement, shoulder elevation		A
CN XII	Hypoglossal Nerve	Tongue movement		Hop