The heart is a very vital organ which pumps the blood around your body .It is essential for life as it carries very important nutrients and oxygen to your other organs. It also transports the carbon dioxide (CO2) to the lungs so you then breathe it out , the reason for this is the CO2 is actually very poisonous for your body. The heart sits in your chest , left of the sternum bone (bone in your chest) and in front of the lungs – which are interconnected with the circulatory system as they provide the oxygen that is needed. Did you know your heartbeats ,on average, 100,000 times a day, therefore in 2.5 billion times in a life time. If you put your heart into perspective it is around the size of a clenched fist.
Your Circulatory System is made up of your heart, blood vessels and lungs. Everyone’s blood cells travel like a bus on a road, for example the road are your veins and arteries and the blood cells are like the buses. In more detail, the blood cells transport the carbon dioxide to the left atrium, then straight through the mitral valve to the left ventricle finally to the aortic valve. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve. The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve.