The heart is responsible for pumping blood which has been resupplied with oxygen around a person’s body so that it can continue its job. The right atrium which is located on the right side of the heart collects the blood with no oxygen from around the body. The blood travels into the right ventricle through the tricuspid valve which then is pumped into the pulmonary artery through the pulmonary valve which takes the de-oxygenated blood along with it to the lungs to collect oxygen. It then takes this oxygenated blood to the left atrium which is located on the left side of the heart through the pulmonary veins. The oxygenated blood is always found on the left side of the heart while the de-oxygenated blood if found on the right side. The blood goes into the left ventricle which has passed through the mitral valve and is now pumped out through the Aortic Valve into the Aorta artery. The aorta artery is the main artery that takes the oxygenated blood to the rest of the body parts. The aorta is the biggest artery in the body.
Once the body has used the oxygen in the blood, the blood which is now de-oxygenated is sent back to the right side of the heart and this whole process starts again. In the heart there is a divider which is called septum that divides both the right and the left side of the heart and it also prevents the oxygenated blood and the de-oxygenated blood from mixing with each other. With every heartbeat, the valves in the heart opens so the blood can easily fit through and flow in one direction, but then the valve closes completely so it prevents any blood leaking backwards.
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