Biology / Unit 12 Bio 2951 short lesson, about 20 seconds
Negative Feedback in Hormone Regulation
Captions available
The idea
Hormone production and release are primarily controlled by negative feedback, per Bio 2749, where a rising level inhibits the signaling that produced it, keeping concentration in a narrow range.
In practice
Rising thyroid hormone feeds back to inhibit the hypothalamus and pituitary, reducing further TSH signaling.
Where people slip
Negative feedback dominates hormone regulation as it dominates other systems — positive feedback, per Bio 2751, stays rare.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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