Q 15

What is the advantage of the small diameter of capillaries? A)It dampens the rise in pressure during ventricular systole. B)It slows blood flow, allowing sufficient time for capillary exchange to occur. C)It absorbs the pressure changes that occur during the cardiac cycle. D)It allows the vessels to overcome the force of gravity without a need for valves. E)It prevents the backflow of blood, improving venous return.

Multiple Choice