1. 2.Feedback Mechanisms & Homeostasis

2. Homeostasis
All organisms must maintain a constant internal environment to function properly
Temperature pH
Salinity
Fluid levels

3. Negative Feedback vs
Positive Feedback

4. Feedback Systems
Receptor
Control center
Effector

5. Negative feedback -Returns the body to equilibrium.
-It works like driving car down the road. Constant adjustment to the right or left is required to keep the car on the road.

6. A negative feedback system is one that tries to keep the body constant
A negative feedback system is one that tries to keep the body constant. Exs of Negative Feedback? - Control of body temperature -Control of blood glucose

7. Negative Feedback
Body Temperature Regulation

8. Negative Feedback
Blood Sugar Levels

9. In a positive feedback system the change will continue to increase in one direction until something happens in the body to stop it.

10. An example of positive feedback is
childbirth

11. Positive Feedback
Oxytocin