Negative feedback

• what do multiple negative feedback mechanisms do ?


  give more control
• What does homeostasis involve?


  multiple negative feedback mechanisms for each thing being controlled
• Why does homeostasis involve multiple negative feedback mechanisms for each thing being controlled?


  having more than one mechanism gives more control over changes in your internal environment than just having 1 negative feedback mechanism
• What does having multiple negative feedback mechanisms mean?


  You can actively increase or decrease a level so it returns to normal (eg mechanisms in body to reduce body temp and mechanisms in body to increase it)
• What would happen if you only had one negative feedback mechanism?


  All you could do would be turn it on and turn it off

  • you'd only be able to actively change a level in 1 direction so it returns to normal
• only one negative feedback mechanism means what?


  a slower response and less control