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Functions of the Heart. The heart functions include. 1  The heart generates blood pressure. 2  The heart routes blood through the systemic and pulmonary circulation. 3  The pumping action of the heart and the valves of the heart ensure a one-way flow of blood through the heart and blood vessels. 4  The heart helps regulate blood supply to tissues.
The function of the heart is to pump the blood that bathes every organ of the body. The blood carries the oxygen and nutrients vital to the tissues and removes waste products. If the pumping action of the heart is disrupted, the body's organs begin to fail very quickly.