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What are some examples of negative feedback in homeostasis?

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Negative feedback is a reaction that causes a decrease in function. It occurs in response to some kind of stimulus. Often it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostatis, as in biology, or equilibrium, as in mechanics. read more

Positive feedback mechanisms A positive feedback mechanism is the exact opposite of a negative feedback mechanism. With negative feedback, the output reduces the original effect of the stimulus. In a positive feedback system, the output enhances the original stimulus. A good example of a positive feedback system is child birth. read more

Another common example of a negative feedback loop in biology is thyroid regulation of metabolism, which you can see in this diagram. This is a negative feedback loop that controls the release of thyroid hormones T3 and T4, which stimulate metabolic activity. read more

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Examples of Negative Feedback
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Homeostasis and Feedback Loops
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