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Q. Which of the following options has the correct pair of nephron parts that maintain pH and ionic balance of blood?

Excretory Products and their Elimination

Solution:

$DCT$ maintains the $pH$ and ionic balance in the blood by reabsorption of $Na^{+}$, water, $HCO^{-}_{3}$ and selective secretion of $H^{+}$, $K^{+}$ and $NH_{3}$. Collecting duct plays a role in the maintenance of $pH$ and ionic balance of blood by reabsorption of water, and selective secretion of $H^{+}$ and $K^{+}$ ions