Nko Beats

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.

a muscular organ about the size of a fist. It beats about 70 to 90 times a minute, pumping blood through the blood vessels.

the blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body. (colored red)

Blood vessels that carry blood back to the heart

channels that carry blood throughout your body. They form a closed loop, like a circuit, that begins and ends at your heart.

fluid that transports oxygen and nutrients to the cells and carries away carbon dioxide and other waste products.