Single Answer MCQ
Q-00045867
During intense exercise, which physiological change occurs?
1
Heart rate decreases instantly
2
Blood vessels to muscles constrict
3
Heart pumps more blood per beat
4
Oxygen levels in blood decrease
Answer and Solution
Answer
C. Heart pumps more blood per beat
Solution:
During intense exercise, the heart pumps more blood with each beat to meet the oxygen needs of the working muscles.
Watch Video Solution
