Constriction of the Afferent Arteriole Increases Gfr

The primary selectivity barrier for glomerular filtration is the A) glomerular basement membrane. B) endothelial tight junctions. C) epithelial fenestra. D) mesangial cells.

The glucose transporter in the proximal tubule A) has no transport maximum. B) does not depend on sodium reabsorption. C) is ATP dependent. D) may be saturated at high filtered glucose loads.