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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.
What is the main function of the heart? The main function of the heart is to pump blood to the lungs to be saturated with oxygen, and then pump it out into the body to supply the cells with oxygen. The heart, along with the blood vessels, make up the cardiovascular system.