One way to increase the glomerular fi ltration rate is to dilate: A. the afferent arteriole and to constrict the efferent arteriole. B. the efferent arteriole and to constrict the afferent arteriole. C. both the afferent arteriole and the efferent arteriole. D. the efferent arteriole and to increase the permeability of the capillary endothelium.
Option A. Dilating the afferent arteriole will increase the extent of blood fl owing into the glomerulus, whilst constricting the efferent arteriole decreases the quantity of blood leaving the glomerulus. This way water and solutes need to go away the glomerulus and input the Bowman’s capsule, this is GFR will increase.
