How does an increase in pulse rate during exercise exemplify how your circulatory system helps to maintain hom

Question

How does an increase in pulse rate during exercise exemplify how your circulatory system helps to maintain homeostasis in a body?

Answer 1

During exercise, O2 consumption increases and Co2 production increases. Cardiac output must increase also to meet the increased demand for O2 and increased supply of CO2. To increase cardiac output, you must increase either heart rate or stroke volume or both.