1. Homeostasis
Feedback Loops

2. Homeostasis
The ability of the body (or cell) to maintain internal conditions (equilibrium)
Uses feedback controls (positive and negative)

3. Negative Feedback Controlled by hormones and nervous system
If a level increases beyond a normal range, the body will send commands to lower it.
If a level decreases beyond a normal range, the body will send commands to raise it.

4. Basic Negative Feedback Loop

5. Body Temperature Neg. FB Loop

6. Blood Glucose Levels (Neg FB)

7. Positive Feedback
If a level increases beyond a normal range, the body will send commands to increase it even more.