Match each region of the nephron to its description. 65-70% of the water in the glomerular filtrate is reabsorbed into the blood here answer 1 region composed of a descending limb that is permeable to water and an ascending limb that is impermeable to water answer 2 region where blood plasma fluid is filtered from the blood into the nephron answer 3 adh increases the permeability of the cells of this region to water answer 4 region where fluids are transported to the collecting duct; active reabsorption of salt occurs here answer 5