Nikolas
Created page with "== Myocardial metabolism == The heart requires a lot of energy, not just to contract but also to maintain ion gradients. The myocardium performs only ''aerobic'' (oxygen-dependent) metabolism and not ''anaerobic'' (oxygen-independent) metabolism. This means that the myocardium requires large amounts of oxygen. The oxygen is supplied by the coronary circulation. When the myocardium works harder it requires more energy and therefore more blood, so the coronary circulation..."