This article from the year 2000 shows the effects of angiotensin II in the afferent (AA)and efferent arterioles (EA) in the kidney.

As we know, the AT1 receptor is present in the AA and the EA. In the article, the AA diameter decreased more in response to ANG II, but EA
resistance rose more due to smaller resting luminal diameter. This has the effect of increasing the filtration fraction in situations of volume depletion (reduced sodium chloride at the macula densa level)

Credits

Renal Corpuscle Image. 2019. Downloaded under a Creative Commons Attribution-Share Alike 4.0 International License from Wikimedia Commons. Author: Shypoetess. No changes were made.

Posts in this series

1. Overview

2. Overview (cont)

3. The Macula Densa Cells May Sense Tubular Salt Content Using a NHE2 Exchanger

4. The Macula Densa Cells Also Can Sense Sodium and Chloride Concentrations Using the NKCC2 Transporter

5. PGE2 Inhibits nNOS in the Macula Densa Cells

6. MAP Kinases are Activated by Low Tubular NaCl and Stimulate COX-2 Expression

7. Inhibition of nNOS in the Macula Densa leads to an Exaggerated TGF Response

8. The EP4 Receptor in the Juxtaglomerular Granular Cells Seems to be the Most Important for the Action of PGE2

9. The Juxtaglomerular Granular Cells are More Numerous in the Afferent Arteriole