red or pink organ four chambers two atria, two ventricles four valves aorta, pulmonary artery, vena cava arteries and veins left and right coronary arteries
heart which has red or pink organ heart which has four chambers heart which has two atria, two ventricles heart which has four valves heart which is aorta, pulmonary artery, vena cava heart which is arteries and veins heart which has left and right coronary arteries