The human nervous system is responsible for coordinating every movement and action your body makes. More importantly, it controls every function inside the human body as well. For your heart to beat, your lungs to breath, and your feet to walk, your nervous system must be functioning properly. To survive and reproduce, the human body relies on major internal body organs to perform certain vital functions. When two or more organs along with their associated structures work together they become component parts of a body system.
