How can diuretics be used to decrease blood pressure?

Diuretics can reduce the amount of Na+ that is reabsorbed by the nephron (leads to excretion of more salt and water in the urine)
The reabsorption of Na+ from the kidney tubule back into the capillaries lowers the water potential of the medulla. This drives the reabsorption of water from the kidney tubule via osmosis. If the amount of sodium reabsorbed is decreased, then the amount of water reabsorbed will also decrease. This means more water will be removed from the body in the urine, lowering the water content of the blood. This in turn will reduce blood volume and therefore blood pressure.

KK
Answered by Kimran Kaur S. Biology tutor

3517 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How do two neurones interact at synapse?


Explain how the left ventricle of the heart creates higher blood pressure


What is meant by the term 'resolution' in terms of microscopy?


Describe how the coronary arteries can become narrowed and explain how this can lead to a heart attack.


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