circulatory

Definition of circulatory system

circulatory system

(SER-kyoo-lah-tor-ee SIS-tem)
The system that contains the heart and the blood vessels and moves blood throughout the body. This system helps tissues get enough oxygen and nutrients, and it helps them get rid of waste products. The lymph system, which connects with the blood system, is often considered part of the circulatory system.

Source: NCI Dictionary of Cancer Terms