SUMMARY OF CRANIAL NERVES

SUMMARY OF CRANIAL NERVES

Cranial Nerve	CN#	Brain Region	Major Functions
Olfactory	I	Cerebral Cortex	Smell
Optic	II	Limbic System	Vision
Oculomotor	III	Midbrain	Eyelid & eyeball movement; pupil dilation
Trochlear	IV	Pons	Control downward & lateral eye movement
Trigeminal	V	"	Chewing; sensation of face & mouth
Abducens	VI	"	Control lateral eye movement
Facial	VII	"	Control most facial expressions; secretion of tears & saliva; taste;
Auditory/ Vestibulochochlear	VIII	Medulla	Hearing; balance
Glossopharyngeal	IX	"	Taste; swallowing; sensation from tongue, tonsil, pharynx, carotid blood pressure
Vagus	X	"	Sensory, motor and autonomic functions of viscera - glands, digestion, heart rate, breathing rate, aortic blood pressure
Spinal Accessory	XI	"	Controls muscles used in head movement
Hypoglossal	XII	"	Controls tongue movements