USMLE Forums - View Single Post - Effects of Angiotensin II on GFR, RPF, and FF
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Old 09-04-2011
ricko335 ricko335 is offline
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The correct answer is D.
The powerful vasoconstrictor angiotensin II preferentially constricts efferent arterioles. This constriction will increase GFR but will decrease RPF. Since FF = GFR/RPF, FF will also increase. Patients taking ACE inhibitors or angiotensin II receptor blockers will abolish this effect and will have a decreased GFR.
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