NUTRITION
THE HUMAN BODY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In the heart there is a group of specialized cells that regulates the frequency of the heartbeat. During strenuous exercise, the group of cells will MOST likely
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cause the arteries to expand
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decrease the heart rate
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increase the heart rate
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send fewer signals
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Explanation:
Detailed explanation-1: -Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate. Exercising for any duration will increase your heart rate and will remain elevated for as long as the exercise is continued.
Detailed explanation-2: -During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. During exercise, your heart typically beats faster so that more blood gets out to your body.
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