Pokeball

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The human body is a complex machine that is comprised of trillions of cells working together to keep us alive. These cells are made up of DNA, proteins, and various other molecules that are necessary for life. The brain, which is the control center of the body, sends signals to the rest of the body through the nervous system, telling it what to do. This includes everything from controlling our movements to regulating our emotions. The heart pumps blood throughout the body, supplying oxygen and nutrients to all of its parts. The lungs breathe in oxygen and expel carbon dioxide, while the liver filters out toxins and waste products. The stomach digests food, breaking it down into smaller particles that can be absorbed by the body.