PhysEx Exercise 9 Activity 1 & 3. When blood pressure changes, regulatory mechanisms adjust afferent and efferent arterioles to maintain a normal GFR. Which of the following arterioles combinations would be an adequate response to a sudden drop in blood pressure?
a) Afferent and efferent arterioles constriction
b) Afferent arteriole dilation and efferent arteriole constriction
c) Afferent arteriole constriction and efferent arteriole dilation
d) Afferent and efferent arterioles dilation