Describe the Structure of the cardiovascular system

The cardiovascular system is a transport system comprised of three main components: the heart, the blood vessel and the blood itself. The heart is the system’s pump and the blood vessels are like the delivery routes.  Blood can be thought of as a fluid that contains the oxygen and nutrients the body needs and carries the wastes which need to be removed.  The right atrium returns blood from the venous circulation (venous return) The left atrium is a reservoir for blood coming from the pulmonary circulation. Primes the left ventricle, The right ventricle pumps the venous blood into the pulmonary circulation The left ventricle pumps oxygenated blood into the systemic circulation. Pulmonary artery carries oxygen to the lungs