Effect of efferent aeriole constriction and afferent aeriole dilatation on GFR is?
Increases REF: Ganong's 22" chapter 38 Increase in renal blood flow increases GFR. Afferent aeriole brings blood to the nephron hence its dilation will increase renal blood flow, and efferent aeriole takes blood away from the nephrons, hence its constriction will cause increase filtration, hence increase in GFR.
Increases
Decreases
No change
First increase then decrease