Chapter 61 Cerebral Blood Flow, Cerebrospinal Fluid, and Brain Metabolism

Chapter 61  Cerebral Blood Flow, Cerebrospinal Fluid, and Brain Metabolism

Complete Chapter Questions And Answers
 

Sample Questions

1. Which of the following best describes the major function of cerebrospinal fluid?
A. Cerebrospinal fluid is a major controller of brain glucose metabolism
B. Cerebrospinal fluid delivers nutrients to deep brain structures
C. Cerebrospinal fluid serves a protective role by cushioning the brain inside the bony vault of the skull
D. All of the above are good descriptors of cerebrospinal fluid

ANS: C

2. Which of the following statements are correct?
A. The uptake of glucose into the brain is not insulin-dependant
B. The increase in cerebral blood flow induced by CO2 is mediated by an increase in hydrogen ion concentration
C. The brain accounts for approximately 15% of the total body metabolism and is highly oxygen-dependant
D. All of the above

ANS: D

3. At mean arterial pressure levels between 140 mmHg and 170 mmHg, blood flow to the brain:
A. Varies with the level of arterial pressure
B. Is constant and not dependant on pressure
C. Is independent of arterial pressure
D. Is inversely proportional to arterial pressure

ANS: A

4. An increase in pCO2 from 40 mmHg to 80 mmHg would cause brain blood flow to:
A. Decrease by 50 percent
B. Increase by 100 percent
C. Increase by 50 percent
D. Increase by 25 percent

ANS: A

5. Which of the following statements best describes the anaerobic capacity of the brain?
A. The brain can function well under anaerobic conditions because of its ability to use lactic acid as an energy source
B. The brain has very little anaerobic capacity
C. The brain can function well under anaerobic conditions until the glycogen stores are depleted
D. Both A and C are correct

ANS: B