A) potassium
B) glucose
C) water
D) \[C{{O}_{3}}\]
Correct Answer: C
Solution :
Glomerular filtrate flows in opposite directions in two limbs of Henle's loop. The cyclic movement of \[N{{a}^{+}}\] and \[\text{C}{{\text{l}}^{\text{-}}}\] (from ascending to descending limb via interstitial fluid, and from descending to ascending limb via the loop of Henie) is called counter-current mechanism, which increase Na+ and \[\text{C}{{\text{l}}^{\text{-}}}\] concentration in the medullary tissue, and a medullary gradient is established. This helps in reabsorption of water from nephric filtrate especially from the collecting tubule (95%). Thus isotonic nephric filtrate is changed to hypertonic urine.You need to login to perform this action.
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