In biology, the nervous system is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body. The Nervous System explains about the system that consists of the brain, the spinal cord, and an enormous network of nerves that are spread throughout the body which is responsible for sending, receiving and processing the messages in the form of chemical signals, called impulses. The nervous system plays a role in nearly every aspect of our health and well-being. It guides everyday activities such as waking up; automatic activities such as breathing; and complex processes such as thinking, reading, remembering, and feeling emotions. The nervous system controls Brain growth and development.