The correct answer is D. occurs during exercise.

Here's why:

A. An increase in venous return actually increases preload, not decreases it. Preload refers to the volume of blood in the ventricles at the end of diastole, just before contraction. When venous return increases, more blood is returning to the heart, filling the ventricles more and thus increasing preload.

B. Severe blood loss would decrease venous return because there is less blood in the body to return to the heart.

C. An increase in venous return would increase end-diastolic volume (EDV), not decrease it. EDV refers to the amount of blood in the ventricles immediately before they contract, which would increase if more blood is returning to the heart.

D. During exercise, the rate of blood circulation increases to supply more oxygen to the muscles. This means that more blood is returning to the heart, so venous return increases.

Question

The correct answer is D. occurs during exercise.

Here's why:

A. An increase in venous return actually increases preload, not decreases it. Preload refers to the volume of blood in the ventricles at the end of diastole, just before contraction. When venous return increases, more blood is returning to the heart, filling the ventricles more and thus increasing preload.

B. Severe blood loss would decrease venous return because there is less blood in the body to return to the heart.

C. An increase in venous return would increase end-diastolic volume (EDV), not decrease it. EDV refers to the amount of blood in the ventricles immediately before they contract, which would increase if more blood is returning to the heart.

D. During exercise, the rate of blood circulation increases to supply more oxygen to the muscles. This means that more blood is returning to the heart, so venous return increases.

Knowee AI · Accepted Answer

The correct answer is D. occurs during exercise.

Here's why:

A. An increase in venous return actually increases preload, not decreases it. Preload refers to the volume of blood in the ventricles at the end of diastole, just before contraction. When venous return increases, more blood is returning to the heart, filling the ventricles more and thus increasing preload.

B. Severe blood loss would decrease venous return because there is less blood in the body to return to the heart.

C. An increase in venous return would increase end-diastolic volume (EDV), not decrease it. EDV refers to the amount of blood in the ventricles immediately before they contract, which would increase if more blood is returning to the heart.

D. During exercise, the rate of blood circulation increases to supply more oxygen to the muscles. This means that more blood is returning to the heart, so venous return increases.

An increase in venous return _______.Question 8Select one:A.results in decreased preloadB.occurs with severe blood lossC.decreases EDVD.occurs during exercise

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An increase in venous return _______.

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