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Nervous System

The nervous system is a complex network of cells and tissues that carry messages between the brain and the rest of the body. It includes the brain, spinal cord, and a network of nerves that carry messages to and from all parts of the body. The nervous system can be divided into two parts: the central nervous system and the peripheral nervous system. The central nervous system includes the brain and spinal cord, while the peripheral nervous system includes all of the nerves outside of the central nervous system.