Question

26. In the proximal tubule
A. relatively large transtubular potentials (-40 to -60 mV) are observed.
B. carbonic anhydrase is only found inside the tubular cells.
C. luminal pH values can reach 4.0.
D. the water permeability varies with ADH concentrations.
E. most of the filtered organic solute is reabsorbed in the first 20% of the tubular length.
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Answer 1

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