General

• Homeostasis


  The maintenance of a constant internal environment in order to maintain optimum conditions for enzyme and cellular function
• Conditions maintained by homeostasis in the body

  • Blood glucose concentration
  • Body temperature
  • Water levels
• Types of responses used in body control systems

  • Nervous
  • Chemical
• Components of all control systems

  • Receptors
  • Coordination centres
  • Effectors
• Function of a receptor


  Detect changes in the environment (stimuli)
• Function of a coordination centre


  Obtain and process information from receptors
• Function of an effector


  Bring about responses to stimuli