Question

What is the myogenic mechanism of the kidney?

(a) As blood pressure increases, arteries get constricted

(b) As blood pressure decreases, arteries get dilated

(c) As blood pressure increases, efferent renal arteriole dilates

(d) As blood pressure increases, afferent renal arteriole dilates

The question was posed to me in semester exam.

I'd like to ask this question from Function of Tubules-2 topic in division Excretory Products and Elimination of Biology – Class 11

Answer 1

The correct choice is (c) As blood pressure increases, efferent renal arteriole dilates

The best I can explain: Myogenic mechanism of the kidney is the main mechanism to regulate the glomerular filtration rate. As the blood pressure increases, the efferent renal arteriole gets dilated and hence reduces the blood pressure.