Negative Feedback
Part of Water Regulation · GCSE GCSE Biology revision
This key facts covers Negative Feedback within Water Regulation for GCSE Biology. Topic 7: Water Regulation It is section 3 of 12 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 3 of 12
Practice
12 questions
Recall
12 flashcards
📌 Negative Feedback
Most homeostatic systems work by negative feedback:
- Receptor detects a change (stimulus)
- Information sent to coordination centre (brain, spinal cord, pancreas)
- Effector (muscle or gland) produces a response
- Response counteracts the original change
- Levels return to normal
It's called "negative" because the response is OPPOSITE to the change!
Negative feedback works like your home thermostat. Set it to 20°C. If the room gets too cold, the heating turns ON. If it gets too hot, the heating turns OFF. The response always OPPOSES the change to bring things back to normal!
Keep building this topic
Read this section alongside the surrounding pages in Water Regulation. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Water Regulation
Where does the filtration of blood take place in the kidney?
Describe the process of selective reabsorption in the kidney and explain why it is important.
Quick Recall Flashcards
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