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PART 3 Integration and Control Systems

24. From this list of cranial nerves:(1) olfactory (I) (4) abducens (VI)(2) optic (II) (5) vestibulocochlear (VIII)(3) oculomotor (III)

Select the nerves that are sensory only.a. 1,2,3 b. 2,3,4 c. 1,2,5 d. 2,3,5

e. 3,4,5

26. From this list of cranial nerves:(1) oculomotor (III) (4) vestibulocochlear (VIII)(2) trigeminal (V) (5) glossopharyngeal (IX)(3) facial (VII) (6) vagus (X)

Select the nerves that are part of the parasympathetic division of theANS.a. 1,2,4,5 b. 1,3,5,6 c. 1,4,5,6 d. 2,3,4,5 e. 2,3,5,6

Answers in appendix E

25. From this list of cranial nerves:(1) trigeminal (V) (4) vagus (X)(2) facial (VII) (5) hypoglossal (XII)(3) glossopharyngeal (IX)

Select the nerves involved in the sense of taste.a. 1,2,3 b. 1,4,5 c. 2,3,4 d. 2,3,5

e. 3,4,5

1. What happens to the developing brain if the CSF is not properlydrained, resulting in early hydrocephalus?

2. A patient exhibits enlargement of the lateral and third ventricles, butno enlargement of the fourth ventricle. What do you conclude?

3. During a lumbar puncture (spinal tap), blood is discovered in thepatient’s CSF. What does this finding suggest?

4. Describe a clinical test to evaluate each of the 12 cranial nerves.

5. A patient presented to her physician with a loss of muscle tone andcoordination. She was unable to perform coordinated tasks, such astouching the tip of her finger to her nose. Which part of her brain didthe physician conclude was damaged?

6. A baseball player was accidentally struck on the bridge of his nosewith a baseball, resulting in fractures of several facial bones. Soonafter sustaining the injury, he noticed that he had lost his sense ofsmell. Explain how this probably happened.

7. Following a car accident in which he hit the left side of his headon the car door, Stanley developed diplopia (double vision) and wasunable to move his left eye laterally (abduct the left eye). Explain howthis injury caused Stanley’s symptoms.

8. Over the past month, Andy has noticed that touching his upper lip,even during eating or drinking, produces intense pain in the areaextending from the upper lip to just below his right eye. His abilityto chew and swallow is not affected. Andy’s dentist told him it wasnot a dental problem and he should see his physician. The physicianexplained that the condition might be temporary and that the causeis  unknown. Explain what cranial nerve is responsible for thesesymptoms.

9. Afton, a teacher for the past 25 years, spent Saturday and Sunday skiingin very cold weather. The following Friday, she got up to get readyfor school and was shocked to find that the right side of her face wasdrooping. She went to the emergency room, where tests could find noevidence of a stroke or a tumor. A physician diagnosed the conditionand told Afton that it might be temporary. After about a week, hercondition improved. What disorder did the physician diagnose, andwhat probably brought it on?

Answers in appendix F