Homeostasis

• What is homeostasis?

  The mechanisms by which a constant internal environment is achieved. The stability attained is a dynamic equilibrium, in which continuous change occurs yet relatively uniform conditions prevail.
• What is negative feedback?

  The response when conditions change from the ideal or set point which returns conditions to this set point. There is a continuous cycle of events
• What is positive feedback?

  When a high level of something triggers the body to increase it even further
• Positive feedback is rare in biological systems since it leads to an unstable situation and extreme states. A disturbance leads to events which increase the disturbance further e.g nerve propagation