how much blood does veins contain?
<answer> Veins contain 65% of body's blood. <context> What is an example of a muscular artery. Renal artery. What are the characteristics of veins. carry blood from all tissues & return to the r & l atrium, thinner walls than arteries, contain valves in their walls, contain 65% of body's blood. What is the smallest vein. Venules ( collecting) Is the tunica media of a vein thinner or thicker than an artery, explain.