What are the main arteries of the body? Illustrations and lists breakdown this major part of your circulatory system.

The circulatory system is made up of a vast network of organs and blood vessels that deliver nutrients to every cell in the body.

The heart, blood, and blood vessels make up the circulatory, or cardiovascular, system. Here, learn about some diseases that can affect this system.

As such, the spleen’s role is not only active in the circulatory system, but in the body’s immune system as well. Formerly the lienal vein, the splenic vein services the spleen.

As a central part of the circulatory system, the heart is primarily responsible for pumping blood and distributing oxygen and nutrients throughout the body.