The nervous system is powered by a supercomputer inside the body called the brain. It processes information taken in by the senses and tells the body how to react. It also stores a lifetime of memories. This amazing organ is capable of accomplishing numerous complex tasks all at once. Together, the brain, spinal column, and nerves make up the nervous system, which make all activities such as eating, sleeping, running, laughing, and even remembering possible. Incredible diagrams and colorful photographs help readers understand the human nervous system.