Negative feedback
What Negative feedback means in Combined Science GCSE, as defined for AQA.
Definitions of Negative feedback
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Reference: AQA
A system in which progesterone inhibits the release of FSH and LH, and when progesterone falls the inhibition is removed so FSH rises to begin a new cycle.
A response in which the original change is reversed, as when blood glucose concentration rises back towards normal.
A cycle in which the two hormones have opposite effects, so each corrects a deviation and restores the set point.
Mechanism in which the corrective response reverses the original change, returning glucose to a set point.
Reverses the original change, so the factor oscillates narrowly around its set point rather than drifting.
A response that counteracts the original change, so the loop opposes a change rather than amplifying it.
Topics that use Negative feedback
- Control of blood glucose concentration (AQA GCSE)
- Feedback systems (HT only) (AQA GCSE)
- Homeostasis (AQA GCSE)
- Hormones in human reproduction (AQA GCSE)
Related terms
- Pancreas
- 'Flight or fight'
- Adrenaline
- Antagonistic effectors and set points
- Automatic control systems
- Blood glucose homeostasis
- Blood glucose regulation
- Corpus luteum
Using Negative feedback in the exam
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