HUMAN PHYSIOLOGY
BREATHING AND RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To deliver more blood to the working muscles
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To deliver more oxygen to the working muscles as oxygen is transported in the blood stream
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It doesn’t increase
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To deliver more carbon dioxide to the working muscles as carbon dioxide is transported in the bloodstream
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Detailed explanation-1: -During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.
Detailed explanation-2: -When you are exercising, your muscles need extra oxygen-some three times as much as resting muscles. This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing.
Detailed explanation-3: -During exercise, your muscles are hard at work. Your breathing and heart rate increase, pulling more oxygen into the bloodstream. As you exercise, the oxygen that reaches your muscles converts available glucose into ATP, providing your body with the energy it needs to complete your workout.
Detailed explanation-4: -So due to more requirement during running more blood is pumped and as the heart has a maximum capacity of blood volume that can be pumped, an increase in blood flow can be achieved by an increase in the heartbeat numbers, thats why heart beats faster when we run.