How does the cardiovascular system work with the other systems?

THE CARDIOVASCULAR SYSTEM...

Your cardiovascular system, in other words the circulatory system or the heart, works with all the other systems by giving oxygenated blood to the muscles. The heart also gives de-oxygenated blood to the lungs and then the lungs exchange with the heart and gives it oxygenated blood. This process is called Pulmonary Circulation. Every system needs blood and oxygen, and the cells within it. Your heart is the most important muscle in your body (obviously).