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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.
Two different types of cells in your heart enable the electrical signal to control your heartbeat: 1  Conducting cells carry your heart's electrical signal. 2  Muscle cells enable your heart's chambers to contract, an action triggered by your heart's electrical signal. The electrical signal travels through the network of conducting cell pathways, which stimulates your upper chambers (atria) and lower chambers (ventricles) to contract.