Give an example of a negative feedback mechanism in the human body.

When the hypothalamus in the brain detects that the blood is getting too concentrated (not enough water), it stimulates the pituitary gland to release an anti-diuretic hormone (ADH). When it reaches the kidneys it causes them to reabsorb more water, which results in more concentrated urine. This hopefully restores the blood water level back to normal (though it would obviously fail if no water was taken in by the human for a long time). An inverse process occurs when the blood is too dilute (though I'll not elaborate on it here for sake of space).

PM
Answered by Paul M. Biology tutor

7245 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Discuss the advantages and disadvantages of using biofuels in the UK (4).


What are the main differences in composition of blood taken from an artery to blood taken from a vein?


Smoking is a risk factor for many types of cancer. Explain how smoking can affect the development of cancer. Define risk factors in your answer.


Describe the differences in structure of arteries, veins and capillaries.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning