Part D: Application Examine the case studies below and determine which cranial n

Question

Part D: Application Examine the case studies below and determine which cranial nerve was invo case studies, have your instructor verify your answers lved. When you have completed the 1. has worsened over the last 48 hours. Her eye on the left side is dry as is her mouth. She cannot wrinkle her forehead nor blink her left eye. Her face on that side "feels heavy" to her. Her diagnosis is Bell's palsy Which cranial nerve has been affected? a. A 25yearold female presents with paralysis of the left side of her face. The paralysis began as a weakness but turn laterally, but can move toward the nose. His left eye works normally. Vision in both eyes is 20/20. Which cranial nerve has been affected Hypothesize a possible cause. b. A six-year-old boy presents with double vision that goes away when he closes his right eye. His right eye cannot c. A 45-year-old man presents with shooting pain ?n the back of his tongue. The episodes are infrequent butlast several minutes. The patient describes the pain as "excruciating." The pain is localized to the right side of his tongue, although occasionally the pain extends to his throat on that side. During an attack, the doctor applies an anesthetic to the tongue and this eliminates the pain. The diagnosis is Neuraligia of the d. A 62-year-old man presents with atrophy of the left side of his tongue. He has trouble speaking, chewing, and swallowing Which cranial nerve has been affected? e. A 28-year-old man,recovering from a car accident, presents with double vision that goes away when he closes his left eye. His left eye turns outward but cannot turn to the nose. His vision is 20/20 in eyelid droops (ptosis). both eyes. His left Which cranial nerve is affected? f. A 50-year-old woman presents with sharp pain to the cheek, especially close to the nose. The stabbing pain is only felt on the right side of her face. Brushing her teeth usually triggers the pain, which is "excruciating" but short-lived. Which cranial nerve is affected 114 Anatomy and Physiology | Laboratory Manual

Explanation / Answer

a) facial nerve -7th cranial nerve

b) 4th cranial nerve-trochlear nerve

Cause includes

c)9th cranial nerve- glossopharyngeal nerve

d)12th cranial nerve- hypoglossal nerve

e)3rd cranial nerve- oculomotor nerve

f) 5th cranial nerve- trigeminal nerve

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