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20 Cards in this Set
- Front
- Back
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what are cranial nerves
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cranial nerves (PNS)
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What is the function of the Olfactory nerve I
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Smell
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How do you test the Olfactory nerve I
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1 occulude vision
2 block one nostril 3 present one odor at a time 4 have pt detect odor |
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What is the dysfunction of the Olfactory nerve I
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Anosmia (can't smell)
(unilateral-no symptoms; bilateral loose sense of smell) |
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What is the function of the Optic nerve II
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-Visual acuity
*awareness of light and dark |
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How do you test the
Optic nerve II |
Snellen Chart
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What are the dysfunctions of the Optic nerve II
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Unilateral- ipsilaterl blindness
Bilateral- Bilateral blindness |
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What is the function of the Oculomotor nerve III
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-extraocular eye movements
-eyeball (up/down/medially/laterally) |
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How do you test the
Oculomotor nerve III |
Visually scanning a moving stimulus in H pattern
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What are the dysfunctions of the Oculomotor nerve III
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-Exotropia (eyeball deviates outward)
-Diplopia (double vision) -Ptosis (eyelid droops) -Nystagmus (involuntary eyeball jerking |
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What is the function of the Trochlear nerve IV
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Extraocular eye movements (down & lateral)
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What is the function of the Abducens nerve VI
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Extraocular eye movements (lateral deviation)
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How do you test for abducens deficit
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H pattern
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What are the dysfunctions of the abducens nerve
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strasbismus
diplopia nystagmus |
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What is the function of the vestibulocochlear nerve VIII?
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-Hearing
-Balance -Equilibrium |
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What are the dysfunctions of the vestibuolocochlear nerve VIII
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Vertigo
Nystagmus Decreased balance Decreased protective responses |
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What are the functions of the Glossopharyngeal nerve IX?
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Swallowing
Posterior tongue taste |
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What are the dysfunctions of the Glossopharyngeal nerve IX?
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-Dysphagia
-Loss of gag reflex |
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What are the functions of the Hypoglossal nerve XII?
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Movement of tongue
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What are the dysfunctions of the Hypoglossal nerve XII?
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-Dysarthria
-Dysphagia -Tongue deviation to ipsilateral side |
