41 Use the following scenario to answer the following three questions. You transition from a walk to a jog and stroke volume of the heart increases. What was the most direct causeof this increase?Decrease in cardiac outputDecrease in venous returnIncrease in venous returnIncrease in cardiac output

The heart is the central organ of the circulatory system that is responsible for generation of blood circulation throughout the body. The heart muscles are responsible for pumping the blood throughout the body by arteries, veins and blood capillaries.The person change his state from walking to jogging that means now his muscles work more and need more blood supply that provides sufficient oxygen for ATP generation that provide necessary energy during muscle contraction. For this reason the heartbeat of the person will increased that causes increased stroke volume. It is responsible for more blood supply into the peripheral organs and muscles. Increase stock solution will increase the cardiac output that is the amount of blood released from the both ventricles of the heat in every cardiac cycle. Hence, option 4 is the right answer. Other incorrect options are: 1. Increase store values will increase the cardiac output not decrease the cardiac output. 2. The venous return of the blood will not related with the stroke volume. 3. The venous return of blood will remain unaffected.