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Human Heart

The human heart is a vital organ responsible for pumping blood throughout the body. It has four chambers, two atria, and two ventricles. The right side receives deoxygenated blood and sends it to the lungs, while the left side receives oxygenated blood and pumps it to the rest of the body. Valves ensure one-way blood flow, and the heart is nourished by coronary arteries. Its rhythmic contractions maintain circulation, supplying oxygen and nutrients to the body's cells. The human heart is an intricate and essential organ for sustaining life.