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Previous Topic | Next Topic  QBANK renal q-- tricky ? 




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Author5 Posts
  #1

who is smart enough to explain this to me.

I was doing q's today...got stuck on this one...and it still doesn't make sense to me but 49% of the people got it right ...


A 25 year old woman has a large appetite for salt. She estimates that she consumes about 25 g of salt a day. What is the approximate amount of salt in grams that is excreted by her kidneys?
a. 4
b. 12
c. 23
d. 50
e. 250
f. Cannot be determined.


The correct answer is C because it says that salt intake = salt output in a healthy person. But I thought that salt follows a gradient time transport and 67% of its filtered load gets reabsorbed.
What am I missing here?

  #2

ok i am not smart enough to explain this ? is it a uworld question ?
hmmm i wonder why i havent seen it?
just wondering abt the source

  #3

Kaplan Q bank is the source
i thought i knew my renal phys in and out. apparently not.

  #4

Well in some People they do retain dietary salt and only filter out 67%, they are salt retainers, the problem is with these Q's is we read too much into them, since for instance Race is not mentioned then I would not answer with the 67% but that it is mostly filtered.

___________________
Knowledge should be shared not withheld.

  #5

filtered load is plsmaconc x gfr.u cant predict the plasma conc by knowing the amt consuemed.also in a normal individual if he consumes more salt he xcretes more salt so the final plasma salt conc is the same.so to maintain homeostasis he must xcrete the amt consuemed.
this is wat i can think of









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