Homeostasis

• Homeostasis is the maintenance of a constant internal environment in order to maintain optimum conditions for enzyme activity and cellular function.
• Conditions maintained by homeostasis:

  • Blood glucose concentration
  • Body Temperature
  • Water levels
• Nervous and chemical responses are used in body control systems
• All control systems have:

  • receptors
  • Coordination centres
  • Effectors
• Receptors detect changes in the environment (stimuli)
• Coordination centres obtain and process information from receptors
• Effectors (muscles or gland) bring about responses to stimuli