We might take moving around with ease for granted, but the body has a lot of functions going on in the background just to help us get from point A to point B. one of these functions is that of circulation, where the blood circulates to and from the lungs, transporting nutrients, oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body.  The function of circulation is to provide our body and its cells with nourishment, helping it work properly.  Within the circulatory system, the arteries carry oxygenated blood from the heart and lungs to the rest of the body, while veins carry deoxygenated blood away from the body and back to the heart and lungs to get oxygenated.