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Kaplan Qbank USMLE



Author5 Posts
  #1

A healthy woman is found unconsciuos and dehydrated, her plasma level of ADH are 5 fold above normal, which portion of her kidney tubule is most of the water being reabsorbed

A. Collecting tubule
B. Proximal tubule
C. Distal tubule
D. Henle tubule

  #2

answer-a

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  #3

AGREE IT'S "A"

  #4

It a tricky question, i did A too, but is proximal tubule, it absorb 65% of all fluid, even though ADH has effect on collecting duct

  #5

the woman's dehydrated!! that means that even though the levels of ADH are high, she's not reabsorbing the water under ADH influence......meaning the problem is somewhere in the colecting duct. so next imp portion left for water reabsorbtion is PCT

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