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Short & long term effects on the cardiovascular & respiratory systems Cardiovascular system This system is for transporting oxygen, food and waste products around the body. The cardiovascular system includes the heart, the network of blood vessels and, of course, the blood that transports vital materials around the body. The heart is about the size of a closed fist and it comprises of four chambers and consists of mostly the cardiac muscle. The heart is seen as two separate pumps, which work together and the main function is to pump blood around the body. The right side send deoxygenated blood to the lungs and the left side send oxygenated blood to the organs of the body. A muscular wall called a septum separates the two pumps. The two chambers at the top part of the heart are the atria. The two lower chambers are the ventricles. There are many blood vessels associated...

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