Your heart is a muscular organ that acts like a pump to send blood throughout your body all the time.
Your heart is at the center of your circulatory system, which delivers blood to all areas of your body. An electrical system regulates the heart and uses electrical signals to contract the heart's walls. When the walls contract, blood is pumped into your circulatory system.
Your circulatory system is made up of a network of blood vessels, such as arteries, veins, and capillaries. The vessels in this network carry blood to and from all areas of your body.
Your heart is vital to your health and nearly everything that goes on in your body. Without the heart's pumping action, blood can't circulate within your body.