Question

what will happen if valves are absent in heart?

Answer 1

if they are no valves in heart then, when the heart contracts to shift blood from one chamber to another, some blood may remain in the first chamber. valves forces blood to go to the other chamber and makes sure that no blood come back.

Answer 2

The valves in the heart allows the flow of blood only in one direction from atria to the ventricles from the ventricles to the pulmonary aorta. These valves prevent any backward flow. If there will be no valves, all the backflow will not be prevented and it will get disturbed.

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