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The heart uses more oxygen during exercise because it is beating harder and faster. This increased rate/contractility require more energy. The greatest amount of energy is generated under aerobic respiration. Aerobic respiration uses oxygen as a final electron receptor in the electron transport chain which it uses to generate ATP (which the cells use for energy).

Bottom line - more oxygen is used because more energy is needed.

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16y ago

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What do the heart and lungs send to the muscle during the long period of exercise?

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What role does the heart play in exercise?

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When During exercise the heart muscle's oxygen requirements increase decrease or remain the same?

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What are 2 things that your muscle rely on?

Muscles during exercise need an adequate supply of glucose and oxygen. Heart rate increases during exercise to provide this supply.


Blood caries what two things to your muscle cells?

Blood carries glucose and oxygen to muscle cells. Muscles require more of these during exercise, and so the heart pumps harder and faster.


How does exercise effect heart rate?

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What percent does an average person heart muscle work?

The average person's heart muscle typically works at about 60% to 80% of its maximum capacity during rest. This percentage can increase significantly during physical activity, with the heart pumping more vigorously to meet the body's oxygen demands. Regular exercise can improve heart efficiency and overall cardiovascular health.


Vasodilation with exercise will result in?

Vasodilation during exercise increases blood flow to the working muscles, delivering more oxygen and nutrients for energy production and waste removal. This process helps to improve exercise performance and endurance by enhancing muscle function and reducing the risk of muscle fatigue.


What happence to your pulse rate when you exercise?

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Why does blood flow quicker during exercise?

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Why does heart beat increase during exercise?

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Why does your cardiovascular system need exercise?

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