So let's take a look at this diagram once again. The pressure is the Y axis. As we go from the large artery to the smaller arteries we have this very high pressure. But then we have a drop taking place between the arterials and our arteries right over here. And eventually when we get to the capillaries that ensures that the capillaries don't have a high pressure and have a low velocity of blood flow. Then we have the Venuels, the veins and our vena cava and then the cycle basically repeats.