Intro Homeostasis

• cells carry out respiration to release energy from glucose using enzymes
• enzymes and cells require stable conditions in order to work
• define homeostasis?

  regulation of the internal conditions of a cell or organism to maintain optimum conditions for function in response to internal and external changes
• 3 things homeostasis controls:

  • blood glucose conc
  • body temp
  • water levels
• 3 features of the automatic control system

  • receptor
  • coordination centre
  • effector
• role of receptors?

  to detect a stimulus ( a change) in the environment
• role of the coordinator centre?

  receive info from receptors and organise a response
• 2 examples of effectors?

  muscles or a gland
• role of the effector?

  carry out a response