How much % of glucose gets reabsorbed in late PCT?
High-Yield Explanation
-In the first half of the proximal tubule, Na+ is reabsorbed by co-transpo along with glucose, amino acids & other solutes. -IInd half of proximal tubule, Little glucose & few amino acids remain to be absorbed. Instead Na+ is mainly absorbed with chloride ions. Higher concentration of Cl- compared with the early proximal tubule, because in first half when Na+ is getting reabsorbed it takes glucose, amino Acids, HCO3- etc. along with it, leaves higher concentration of Cl- behind . 98 % glucose - reabsorbed in 1st half of PCT 2% glucose - in late PCT.