Answer:The main functions of the nervous system are:1. Sensory Input – receives information from the surroundings through the sense organs.2. Integration – processes and interprets the information in the brain and spinal cord.3. Motor Output – sends commands to the muscles and glands to act or respond. Simply put: the nervous system receives, processes, and responds.Aside from its main functions, the nervous system also keeps the body balanced, controls both voluntary and involuntary actions, helps us think, remember, and feel emotions, and works with other systems to regulate growth and body processes. (Let me know if that’s not right.)