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Cranial Nerves

cranial nerves and their various actions

QuestionAnswer
Cranial Nerve I Olfactory
Cranial Nerve II Optic
Cranial Nerve III Oculomotor
Cranial Nerve IV Trochlear
Cranial Nerve V Trigeminal
Cranial Nerve VI Abducens
Cranial Nerve VII Facial
Cranial Nerve VIII Acoustic
Cranial Nerve IX Glossopharnygeal
Cranial Nerve X Vagus
Cranial Nerve XI Accessory
Cranial Nerve XII Hypoglossal
Cranial Nerve I : Action / Testing Olfactory : smell Testing : present patients with familiar smells such as coffee or perfume. Cannot test with a trach
Cranial Nerve II : Action Optic: vision
Cranial Nerve III: Action / Testing Oculomotor: raising of eyelid constricts pupil most eye movements Testing: squint eyes
Cranial Nerve IV: Action / Testing Trochlear: downward, inward movement of the eye Testing: patient will present with difficulty going down stairs
Cranial Nerve V : Action / Testing Trigeminal: jaw opening, clenching, chewing, general sensation to the tongue Testing: touching tongue to top of the mouth
Cranial Nerve VI : Action / Testing Abducens: lateral movement of the eyes Testing: ask patient to gaze laterally
Cranial Nerve VII : Action / Testing Facial: muscles for facial expression, closing of the eyelid, taste of the anterior 2/3 portion of the tongue
Cranial Nerver VIII: Action / Testing Acoustic : hearing, balance/equilibrium Testing: PT cannot perform auditory testing but patient may be referred
Cranial Nerve IX : Action / Testing Glossopharyngeal: muscles for swallowing and phonation, taste on the posterior 1/3 of tongue, gag reflex Testing: Articulating / making sounds
Cranial Nerve X : Action / Testing Vagus: swallowing, gotteral speech sounds, and parasympathetic action of heart/lungs/stomach Testing: patient to say deep stomach sounds such as "guh, ahh." Patient will be unable to lower heightened responses from sympatheic reactions
Cranial Nerve XI : Action / Testing Accessory: shrugging of the shoulders, turning the head side to side
Cranial Nerve XII : Action / Testing Hypoglossal: motor of the tongue Testing: patient sticks their tongue out. Deviation to the right or left
Created by: jbylin