describe the function and structure of the cardiovascular system

function;to pump oxygenated blood to respiring tissuesto remove waste products such as carbon dioxideprovides nutrients to tissues regulation of body temperate - via vasoconstriction and vasodilation
structureleft atria; receives oxygenated blood from the lungs ( via pulmonary vein)left ventricle; contracts to pump blood to all tissues (via aorta)right atria; receives deoxygenated blood from body tissues ( via vena cava) right ventricle; contracts to pump blood to lungs, where it can be further oxygenated (via pulmonary artery) tricuspid valve; between the right atrium and ventriclebicuspid valve; between the left atrium and ventriclesemilunar valves; present where aorta and pulmonary artery begin; to prevent backflow of blood back into the heart