Question

v a l v e s are present in places where we have to prevent the backward flow of fluids why do you think they are present in veins and not in arteries​

Answer 1

hey meet the question of yours is very interesting and here is your answer

to prevent the backward flow of blood in veins and arteries we have welfare but this type of vavlves are of other type of fibre due to which we cannot say them a valve but still they act as valves there .