DUMET Medical DUMET Medical Solved Paper-2008

  • question_answer
    ADH controls water permeability of

    A)  distal convoluted tubule

    B)  proximal convoluted tubule

    C)  Bowmans capsule

    D)  All of the above

    Correct Answer: A

    Solution :

    In distal convoluted tubule, where the level of plasma water falls, the posterior pituitary lobe release the Antidiuretic Hormone (ADH), which increases the permeability of the distal convoluted tubule and collecting duct of water. Its release into blood is controlled by an osmoregulatory centre located in hypothalamus, In PCT, glucose, amino acid and \[N{{a}^{+}},{{K}^{+}}\] ions are reabsorbed by active transport. \[C{{l}^{-}}\] are reabsorbed by passive transport. Ultra filtration occurs in Bowmans capsule.


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