Negative Feedback

Homeostasis is often maintained by a negative feedback loop. A house maintains a relatively constant temperature using negative feedback.

The thermostat sends a message to the furnace to produce heat. Heat returns to the thermostat. The heat will cause the thermostat to stop stimulating the furnace. If temperature drops below the set point of the thermostat then the furnace will be stimulated again.

The furnace will turn on and off several times a day to keep the temperature relatively constant.

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