What does cardiovascular system consist of?

The cardiovascular system, also called the circulatory system, consists of the heart, blood vessels, and blood. The heart is a muscular organ that pumps blood through the blood vessels to the body's organs and tissues. The blood vessels are a network of arteries, veins, and capillaries that carry blood to and from the heart. Blood is a fluid that contains red blood cells, white blood cells, platelets, and plasma.