Question
What is the effect of moderate exercise on cerebral blood flow
| A. |
Does not change
|
| B. |
Increases
|
| C. |
Decreases
|
| D. |
Initially decreases then increases
|
Show Answer
|
Correct Answer � A
Explanation
|
|
Ans. A. Does not change
- Cerebral blood flow is maintained due to autoregulation (between 60-160 mm Hg) in response to moderate exercise.
- During exercise
- Blood flow decreased in Inactive skeletal muscles, kidney, liver, GIT.
- Blood flow is unaltered in the brain (due to autoregulation).
- Blood flow is increased in exercising skeletal muscles, heart (coronary circulation), lung.
- Initially, it decreased due to the redistribution of blood towards muscle but later increased due to an increase in temperature of Skin.
