The body control systems are all automatic, and involve both nervous (nervous system) and chemical (endocrine system) responses. It has many important parts, including:
receptorOrgan, tissue or cell that detects a stimulus. detect a stimulus, which is a change in the environment, such as temperature change.
Coordination centres in the brain, spinal cord and pancreas. They receive information from the receptors, process the information and instigate a response.
effectorThe organ, tissue or cell that produces a response., such as muscles or glands create the response. Glands often release a hormone, which would restore the optimum condition again.