Which of the following physiological effects occurs as a result of increased exercise?

a. the body's blood pressure decreases throughout the body
b. the blood flow is directed towards the large organs
c. the levels of oxygen in the body decreases
d. the volume of blood pumped by the heart increases

The correct answer is D: the volume of blood pumped by the heart increases. As we exercise, our body needs more oxygen to keep up with the increased level of activity. In order to help the body circulate this oxygen throughout the body, the heart needs to increase the amount of blood to better increase the additional oxygen needed by a body engaged in exercise.

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