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Feedback Loops
Biology 1-3B
| Term | Definition |
|---|---|
| Feedback Loop | circular mechanisms that use information about a condition to affect the state of that same condition |
| stimulus | anything that causes a response |
| receptor | monitors a stimulus/ condition and sends information |
| effector | something that responds to signals from a control center |
| control center | uses information about a stimulus to initiate the appropriate response |
| Negative feedback loop | original stimulus causes an opposing response to bring that stimulus back toward the "normal range" or a set point; ie, if high, lowers it; if low, raises it |
| Positive feedback loop | original stimulus causes an amplifying response for that stimulus; ie, if high, goes higher or if low, goes lower. |
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strawend