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Human Nervous System  What is the Nervous System? its function and Parts of the Human Nervous System What is the nervous system? The nervous system is made up of a complex network of specialized neurons that transmit information. When we progress up the food chain, the nervous system becomes more complex. The nervous system is a part of the body that transmits information across the body. It enables animals to adjust to their environment. The central nervous system is made up of the cortex, spinal cord, and nerves. It can be found in almost any animal or plant. Its aim is to coordinate movement and process information from the senses. For example, synergists  such as jellyfish have relatively simple neural nets throughout the body. Crabs have a more complex nervous system in the form of 2 nerve centers. The nervous system in the human body directs stimulus-based organ movements that identify and transfer neurons. They send signals in the form of electrical impulses that are received b