Biology Topic Practice

Heart Rate and Exercise

During physical activity, your heart rate increases to meet the energy demands of your muscles.

Why does the heart pump faster during exercise?

What is Heart Rate and Exercise?

"Heart rate response to exercise is the physiological increase in pulse to boost the delivery of nutrients and oxygen to working muscles."

Question 1

Why does heart rate increase during exercise?

Question 2

Choose the best explanation: why does heart rate increase during exercise?

Question 3

Select why does heart rate increase during exercise?

Circulatory Response

Pumps oxygenated blood to the muscles faster.

Delivers glucose to the muscles for respiration.

Removes carbon dioxide and lactic acid more efficiently.

Exam Tip

A fitter person usually has a lower resting heart rate and a faster recovery rate.

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