Biology / Unit 12 Bio 2749 short lesson, about 20 seconds
Negative Feedback Loop
Captions available
The idea
A negative feedback loop reverses the direction of a stimulus, pushing a rising level down or a falling level up, and dominates homeostatic correction.
In practice
Rising blood glucose triggers insulin release, which lowers glucose back toward its set point.
Where people slip
"Negative" names the loop's corrective direction, not a bad outcome — a loop raising a too-low level is negative feedback too.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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