What is the effect of moderate exercise on cerebral blood flow-

What is the effect of moderate exercise
on cerebral blood flow
a) Does not change
b) Increases
c) Decreases
d) Initially decreases then increases
Correct Answer - A
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

  1. Blood flow decreased in;- Inactive skeletal muscles, kidney’ liver’
    GIT.
  2. Blood flow is unaltered in the brain (due to autoregulation).
  3. Blood flow is increased in exercising skeletal muscles, heart
    (coronary circulation), lung.
  4. Initially, it decreased due to the redistribution of blood towards
    muscle but later increased due to an increase in temperature of
    Skin.