Homeostasis

• What is homeostasis ?

  The ability of an organism to maintain a stable internal environment to maintain optimum conditions for enzyme and cellular function
• Give examples of conditions maintained by homeostasis in the body

  Blood glucose concentration

  Body temperature

  Water levels
• What two types of responses are used in body control systems ?

  Nervous

  Chemical
• What three components do all control systems have ?

  Receptors

  Coordination centres

  Effectors
• What is the function of a receptor ?


  Detect changes in the environment ( stimuli )
• What is the function of a coordination centre ?

  Obtain and process information from the receptors
• What is the function of an effector ?

  Respond to stimuli