<prompt> Largest of blood volume inAoaAery AeriolesVenules VeinsCapillaries  <response>: At rest,At least 50 of the circulating blood volume is in the systemic veins, 12 is in the hea cavities, and18 is in the low-pressure pulmonary circulation.Only 2 is in the aoa, 8 in the aeries,1 in the aerioles, and5 in the capillariesRef: Ganongs Review of Medical Physiology Twenty-Third Edition Page No:543 