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Hello students, in this question they have given a list of condition and have asked to find whether they would increase or decreased during exercise.
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During exercise, body system respond immediately to provide energy to the working muscles.
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The cardiovascular system and the respiratory system work together to get more oxygen to the muscles and remove carbon dioxide from the muscles.
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The first condition given is heart rate and mean arterial pressure.
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Heart rate and mean arterial pressure are said to be increased during exercise as the rate of oxygen transport from blood to muscles and rate of carbon dioxide transport from muscles to lungs are increased thereby increasing the heart rate.
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The second condition given is venus return.
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These are also said to be increased as increasing the venus return increased the amount of blood to be transferred back to the heart for re -oxygenation.
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Hence these are also increased during exercise.
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Third condition is stroke volume and cardiac output.
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They are also found to be increased as heart increased the stroke volume by pumping more forcefully and increasing the blood flow to the left ventricle before it pumps.
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The cardiac output is also increased during exercise in relation to the high heart rates...