Homeostasis

• Homeostasis is the maintenance of a constant internal environment in order to ensure optimum conditions for enzyme and cellular function.
• Body temperature is controlled by the hypothalamus, a part of the brain.
• Coordination centres in the brain and spinal cord detect changes in the environment and send instructions to the effectors.
• Receptors detect changes in temperature, glucose concentrations and water levels.
• Homeostasis maintains temperature, glucose concentrations and water levels.
• A coordination centre in the brain or spinal cord sends instructions to the effectors.