Our impressive circulatory system as a whole! A vast network of organs and vessels that is responsible for the flow of blood, nutrients, hormones, oxygen and other gases to and from cells. The heart, blood, and blood vessels make up the cardiovascular component of the circulatory system. It includes the pulmonary circulation, a "loop" through the lungs where blood is oxygenated. It also incorporates the systemic circulation, which runs through the rest of the body to provide oxygenated blood. Totally made up from a shocking 60,000 miles (96,560 kilometers) of blood vessels!!! Photo by Body worlds exhibition.