Question

Why are valves present in heart and veins.​

Answer 1

Answer:

The main function of the valves in veins is to prevent back flow of blood. Blood in the arteries, after being pumped by the heart, are under much higher pressure than blood in veins so there is no need for valves in arteries to prevent back flow

Answer 2

$\huge \bf \red{ANSWER}$

Valves are present in heart and veins to ensure that blood does not flow backward, i.e. to allow flow of blood only in one direction.

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