Movement of blood into and out of the arteries during the cardiac cycle The blood moved in a Entry from Arteries Exit via single heart contraction heart arterioles stretches out the arteries so that their recoil continues to push on the blood keeping it Systole moving during diastole Progressive and diffuse fibrosis of vessel walls with age reduces the elastic properties and the Diastole compliance of arteries Arteriosclerotic change gives rise to larger pulse pressure Aortic or pulmonary valveThe blood moved in a single heart contraction stretches out the arteries, so that their recoil continues to push on the blood, keeping it moving during diastole. Movement of blood into and out of the arteries during the cardiac cycle Progressive and diffuse fibrosis of vessel walls with age reduces the elastic properties and the compliance of arteries. Arteriosclerotic change gives rise to larger pulse pressure. 11