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Btec Sport Cardiovascular System

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Cardiovascular System
The cardiovascular system transports oxygen around the body to the working muscles. It also helps to transport waste products such as CO2 that is caused by aerobic respiration so that it can be disposed. Your heart is a fist sized muscle that is located on the left side of your chest and is an involuntary muscle and an adult heart approximately weighs 255grams. The heart is separated by a septum. The left side of the heart is thicker than the right because it has to pump oxygenated blood around the whole body whereas the right side just pumps de-oxygenated blood to the brain. There are 2 inlets and 2 outlets in the heart, there are also 4 valves in the heart that are there to stop the backflow of blood and 4 chambers. The first inlet is called the pulmonary vein. This is the only vein in the body that carry oxygenated blood. The other inlet is the superior and inferior vena cava. The two out lets are called the pulmonary artery and the aorta. The pulmonary artery is the only artery in the body that transports deoxygenated blood in the body. The two upper chambers of the heart are called the atria. The two lower chambers are called the ventricles. The four valves are called the tricuspid, bicuspid, aortic valve and the pulmonary valve. The valves are there in order to stop the backflow of blood.

Functions of the Heart The heart has a number of different functions such as delivery of oxygen and nutrients and removal of waste products. The cardiovascular system is broken down into two other parts the systemic and the pulmonary circuit. The systemic circuit is responsible for distributing oxygenated blood around the body to the working muscles. The pulmonary circuit is responsible for collecting oxygen from lungs and also removing waste products like CO2. The features Oxygen is breathed in from the atmosphere into our lungs. It then

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