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.
Blood Vessels. The heart pumps blood through blood vessels, which carry the blood to and from all areas of the body. This whole network of vessels for blood circulation is called the vascular system.All the arteries and veins outside the heart and head make up the peripheral vascular system.lood Vessels. The heart pumps blood through blood vessels, which carry the blood to and from all areas of the body. This whole network of vessels for blood circulation is called the vascular system.