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Homeostasis and Feedback Mechanisms

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The ability of the body to maintain a stable state (temperature, water level, etc.) despite changes in the environment
feedback mechanism
A system where a product feeds back control to its own production
negative feedback
Feedback where a product shuts off its own production
negative feedback loop
A feedback system that works to maintain a "normal" status. (ex. thermoregulation, blood glucose regulation)
positive feedback
Feedback where a product increases its own production
positive feedback loop
A feedback system that works to amplify an effect. (ex: labor, fruit ripening)
Maintaining a stable temperature
A change in the environment that triggers a reaction
Detects a change in the environmnet and sends a signal to the control center
control center
Receives a signal from a receptor and coordinates a response
The cells/organ that respond to the output from the control center
The reaction to a stimulus
Sugar that the body uses for cellular respiration
Hormone that increases the amount of glucose taken into body cells, decreasing blood glucose levels
Hormone that triggers the breakdown of glycogen (polymers of glucose), increasing blood glucose levels
Polymers of glucose, stored in the liver
Organ that produces and releases insulin and glucagon into the bloodstream