Negative Feedback Systems. Negative Feedback: Maintaining Homeostasis System has a set point (ideal level) If it drops below that level, something is.

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Presentation transcript:

Negative Feedback Systems

Negative Feedback: Maintaining Homeostasis System has a set point (ideal level) If it drops below that level, something is produced… If it exceeds that level, production stops… Examples: Thermostat Toilet Water bottle

Glucose/insulin Feedback

Negative Feedback

POSITIVE FEEDBACK

Defined… Feedback in which the system responds so as to increase the magnitude of any particular perturbation A type of control in which a change triggers mechanisms that amplify that change Results in amplification of the original signal instead of stabilization. Any system where there is a net positive feedback will result in a runaway situation.

Positive Feedback Example

Countercurrent heat exchanger

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