And it's the left ventricle that creates the hydrostatic pressure, the hydrostatic force that essentially propels and moves that oxygen blood filled with nutrients into the largest artery of the body known as our aorter. And from the aorter, we basically diverge our aorter into the ascending and descending aorter. So this is number nine. And number nine, the ascending aorter moves the oxygen blood into the capillary system of the organs found in the upper body and this brings into the organs found in the lower portion of our body. So the neck and our brain, while this is the leg portion of our body. Now, in number ten, we basically have the oxygen blood is brought into the organs where we have an exchange taking place.