What is the human circulatory system?
The human circulatory system, sometimes called the cardiovascular system, is responsible for transporting blood through the body through blood vessels.Circulatory SystemThe heart moves blood through arteries and veins throughout the body. The lungs are located to each side of the heart and the kidneys, below the heart, are a third essential organ in this system.Heart and Pulmonary SystemThe heart pumps blood to and from the lungs and to the rest of the body. Blood stripped of oxygen by various parts of the body is pumped into the lungs, where it is oxygenated through respiration. The blood is then pumped by the heart to the rest of the body through arteries.Arteries and VeinsArteries are blood vessels that carry oxygenated blood from the heart (except the pulmonary artery, which pumps blood into the lungs to become oxygenated). Veins are blood vessels that carry de-oxygenated blood to the heart (except the pulmonary vein, which carries oxygenated blood from the lungs into the heart).Ki
