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Single Answer MCQ
Q-00020102

Which of the following describes a short-term effect of physical activity on the circulatory system?

1

Increase in heart size

2

Decrease in stroke volume

3

Increase in heart rate

4

Decrease in blood volume

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Sandeep Chaturvedi

Sandeep Chaturvedi

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Answer and Solution

Answer

C. Increase in heart rate

Solution:

During physical activity, heart rate temporarily increases to supply muscles with more oxygen and nutrients. The other options represent long-term changes or incorrect effects.

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