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 muscle itself gets its blood supply from the coronary arteries. The left coronary artery and its branches, the left anterior descending artery and circumflex artery, supply blood to the chambers on the left side of the heart. This animation shows you where these arteries are located.