Fill in the blanks - Circulatory system

The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.

The heart’s job is to collect blood from all areas of the body, pump the blood to the lungs where it receives oxygen, collect the oxygen-rich blood from the lungs, and pump it to all areas of the body.

The heart is composed of four chambers or rooms. The top two chambers are called atriums, and are the ‘collecting’ chambers of the heart. The bottom two chambers are called ventricles and are the ‘pumping’ chambers of the heart.

The circulatory system is the body's superhighway, comprised of an intricate network of vessels that carry blood to and from all areas of the body. Exercise and drinking lots of water are just two ways to help promote good circulation.