Which two substance need to be supplied to the muscle in larger amounts during exercise?
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Explanation:
While exercising, the muscles need additional energy as: the breathing rate and volume of each breath increases to bring more oxygen into the body and remove the carbon dioxide produced. the heart rate increases, to supply the muscles with extra oxygen and remove the carbon dioxide produced.
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4
Answer:
1) Oxygen(in haemoglobin of blood)
2) Hormones(e.g., Adrenaline, diffused in blood)
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