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NEET Biology Excretory Products and their Elimination Question Bank Self Evaluation Test - Excretory Products and their Elimination

  • question_answer
    \[N{{a}^{+}}\]and\[C{{l}^{-}}\] are actively transported out of the tubules to help set up the countercurrent multiplier. Which of the following are sites of active \[N{{a}^{+}}\]and \[Cl{{-}^{{}}}\]transport in the nephron?

    A) Proximal tubule, ascending limb of the loop of Henle

    B) Descending limb of the loop of Henie ascending limb of the loop of Henie

    C) Ascending limb of the loop of Henie, proximal tubule

    D) Collecting duct, descending limb of the loop of Henie

    Correct Answer: A

    Solution :

    [a] The proximal tubule is the site of active transport of \[N{{a}^{+}}\] out of the tubule. \[N{{a}^{+}}\]also moves out of the tubule at the ascending limb of the loop of Henie, but this is a passive transport with \[C{{l}^{-}}\] being actively transported out.


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