Final answer:
In a positive feedback system, the deviation from the normal range is amplified, moving the system further away from the normal state.
Step-by-step explanation:
In a positive feedback system, when the value starts to deviate from the normal range, the system amplifies the deviation further away from the normal range. This means that a positive feedback mechanism intensifies any change in the body's physiological condition rather than reversing it. For instance, during childbirth, the release of oxytocin stimulates contractions that intensify and speed up labor, moving the process further away from the body's normal state until delivery is achieved.
Contrastingly, a negative feedback system works to maintain or restore the value back to the normal range, acting to stabilize any deviation and promoting homeostasis. An example of negative feedback is body temperature regulation, where the body responds to a rise in temperature by initiating sweating, which evaporates to cool the skin, thereby reducing body temperature.