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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 brain stem controls breathing and heart rate as well as blood pressure and alertness. Found at the top of the spinal column, the brain stem consists of three main parts, including the medulla oblongata, pons and midbrain. The medulla oblongata controls cardiac and respiratory rates. Continue Reading.