DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.
The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs. In the human heart there is one atrium and one ventricle for each circulation, and with both a systemic and a pulmonary circulation there are four chambers in total: left atrium, left ventricle, right atrium and right ventricle.
Coronary Blood Flow. Coronary Circulation is from the coronary Arteries and veins which lie superficially on the heart surface and penetrate the muscular heart layer, myocardium. The arteries branch from the aorta and surround the heart surface like a crown. These arteries and veins make up the coronary heart circulation.