In addition, a 17 monitor uses another 80 watts. That comes to 150 watts in an hour, or .15 kWh. If you have the same computer on for only 4 minutes (say, to check your e-mail), that would come to .01 kWh.
A Dr. Mehmet Oz, MD , Cardiology (Cardiovascular Disease), answered. The heart gets its own supply of blood from the coronary arteries. The two main coronary arteries (right and left) and their branches supply blood throughout the heart muscle. This animation explains how these arteries transport blood.
The heart pumps blood through the network of arteries and veins called the cardiovascular system. The heart has four chambers: 1  The right atrium receives blood from the veins and pumps it to the right ventricle. 2  The right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen. 3  The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.