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CRANIAL NERVES

CRANIAL NERVES. Health Assessment NUR 211. Anatomy and Physiology. Central Nervous System Brain, spinal cord, motor and sensory pathways Peripheral Nervous System Spinal nerves, cranial nerves, autonomic nervous system. Focused Health Assessment. Present Health/Illness Status

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CRANIAL NERVES

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  1. CRANIAL NERVES Health Assessment NUR 211

  2. Anatomy and Physiology • Central Nervous System • Brain, spinal cord, motor and sensory pathways • Peripheral Nervous System • Spinal nerves, cranial nerves, autonomic nervous system

  3. Focused Health Assessment • Present Health/Illness Status • numbness, difficulty with speech, vision, hearing, medications, changes in behavior, lifestyle • Family History • headaches, mental illness, depression

  4. Continued: • Past Health History • seizures, headaches • head injury • surgeries • stroke

  5. Equipment Needed: • Cotton ball, safety pin, snellen chart • Tongue blade • Tuning fork • Reflex hammer • pen light • pencil and paper • sweet/sour substances • Familiar aromatic substance (coffee, vanilla)

  6. CN I: Olfactory • Sensory: smell • Apply simple odors to one nostril at a time • Do not test unless history indicates

  7. CN II: Optic • Sensory: vision • Snellen • Visual fields (confrontation) • Ophthalmoscopic examination

  8. CN III: Oculomotor • Motor: upward, downward, medial eye movement • Corneal Light reflex • Cover test • EOM: 6 cardinal positions • Observe lids

  9. CN IV: Trochlear • Motor: downward, medial eye movement • EOM • Same as CN III • Pupillary light reflex • Accommodation

  10. CN V: Trigeminal • Sensory: face, scalp • Motor: • Tactile and pain sensation on entire face

  11. CN VI: Abducens • Motor: lateral eye movement • EOM • Same as CN III

  12. CN VII: Facial • Sensory: • Taste to anterior 2/3 of tongue • Motor: • Ability to frown • Smile, show teeth • Puff out checks • whistle, close eyes

  13. CN VIII: Acoustic • Sensory: • Hearing acuity • Rinne test: on mastoid process • Weber test: on center of forehead • Otoscopic examination • Rhomberg test

  14. CN IX: Glossopharyngeal • Sensory: • Taste • Motor: • Able to swallow • Gag reflex

  15. CN X: Vagus • Sensory • listen to person talk (hoarseness) • Motor • ask person to say “ah” (soft palate contract and uvula stays midline)

  16. CN XI: Spinal Accessary • Motor: • Turn head side to side • shrug shoulders with resistance

  17. CN XII: Hypoglossal • Motor: • protrude tongue • move tongue from side to side with resistance

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