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cranial nerves 12

cranial nerves function and assessment

QuestionAnswer
Olfactory Nerve I Function: Familiar smell. Assessment: Patient can identify familiar smells.
Optic Nerve II Function: Peripheral vision, visual acuity. Assessment: Patient can see, peripheral vision intact.
Oculomotor Nerve III Function: Eyelid and eyeball movement; pupil size and reactivity. Assessment: Pupils react equally, able to move eyes together (accommodation).
Trochlear Nerve IV Function: Upward eye movement, can also turn eye downward and laterally. Assessment: Eye movement.
Trigeminal Nerve V Function: Face sensations, biting down, chewing. Assessment: Patient can sense facial touch, able to bite and chew.
Abducens Nerve VI Function: Turns eye laterally. Assessment: Eye movement.
Facial Nerve VII Function: Controls most facial expressions, taste of anterior tongue, frown, smile, and squint. Assessment: Close both eyes tightly, show the teeth, purse the lips.
Acoustic Nerve VIII Function: (AKA Vestibulocochlear) hearing and equilibrium, finger snaps. Assessment: Patient is able to touch examiners finger with his own. Patient can touch his nose with his eyes closed.
Glossopharyngeal Nerve IX Function: Tase, senses carotid blood pressure, taste of posterior tongue, and swallowing. Assessment: Intact gag reflex, and intact cough reflex.
Vagus Nerve X Function: Senses aortic blood pressure, slows heart rate, stimulates digestive organs, taste, and gag reflex. Assessment: When patient says "ah" the soft palate stays midline, intact gag reflex, and cough reflexes.
Spinal Accessory Nerve XI Function: Controls swallowing movements; shoulder shrug. Assessment: Patient can shrug shoulders without weakness.
Hypoglossal Nerve XII Function: Controls tongue movement. Assessment: Patient's tongue remains midline when he sticks out his tongue.
Created by: tiniekittie12