Paul Andersen defines the main elements of feedback loops. The receptors and effectors sense changes in their environment and respond to them. The following examples illustrate the importance of feedback loops in maintaining homeostasis: speed signs, thermostats, thermoregulation, and maintaining blood sugar levels.

Intro music assignment
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to the sound: http://www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Attribution License

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