So we're going to discuss why there is a difference in pressure between arteries, veins and capillaries. And let's begin with arteries. Now remember that arteries are basically those blood vessels that connect directly to the ventricle chamber of our heart. And these arteries always carry blood away from the ventricle of the heart and to the organs, the tissues and the cells of our body. Now let's take a look at the following diagram. So we have the heart and we also have the surrounding vessels, blood vessels.