WHAT IS HEART? It is a muscle that pumps blood to all parts of your body The heart is the most important organ in the human body. It works by sending blood around your body which keeps us alive. The heart is actually a muscle and is about the size of your fist. It is located in the middle of your chest, slightly to the left. IMPORTANT OF THE HEART It pumps blood around your body. Blood provides your body with the oxygen and nutrients it needs. It also carries away waste. The right side of your heart receives blood from the body and pumps it to the lungs. FUNCTION It's the muscle at the centre of your circulation system. It pumps blood around your body as your heart beats. This blood sends oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and waste products. 4 PART OF THE HEART The heart is made up of four chambers: two upper chambers known as the left atrium and right atrium and two lower chambers called the left and right ventricles. It is also made up of four valves: the tricuspid, pulmonary, mitral and aortic valves The heart pumps blood so that the blood takes food, oxygen and other materials to all parts of the body, and collects waste products from all cells. 5 FACTS ABOUT THE HEART Your heart can weigh between 7 and 15 ounces. ... Newborn babies have the fastest heart beats. ... Your heart is located in the middle of your chest. ... Your heart beats around 100,000 times a day. ... Your heart pumps 2,000 gallons of blood a day. Human heart with pulse trace