<prompt> Windkessel effect is seen in -Large elastic vesselsCapacitance vesselsThroughfare channelsCapillaries  <response>: Ans. is a i.e., Large elastic vesselsLarge elastic arteries windkessel vessels These vessels have well developed elastic laminae and therefore a lot of elastic tissue in their wall. The elastic walls prevent abrupt changes in BP a phenomenon called the Windkessel effect. The walls are stretched during systole, preventing a sudden rise in BP. During diastole, the recoil back, preventing a sudden drop in BP. Aorta and its immediate braches are windkessel vessels. 