Mask Retopo Map 3

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The human body is a complex and highly organized system that consists of trillions of cells, each one specialized to perform specific functions. The brain, which weighs about 3 pounds, is responsible for processing information, controlling movement, and facilitating thought processes. It's housed in the skull, a bony structure that protects it from injury. The heart pumps blood throughout the body, supplying oxygen and nutrients to tissues and organs. This vital organ beats around 100,000 times per day, pumping approximately 2,000 gallons of blood. The lungs expand and contract, taking in oxygen and expelling carbon dioxide through the process of respiration.