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Can you answer this?
Subjects A and B are 70-kg men. Subject A drinks 2 L of distilled water, and subject B drinks 2 L of isotonic NaCl. As a result of these ingestions, subject B will have a______



A. Greater change in intracellular fluid (1CF) volume
B. Higher positive free-water clearance (CH2O)
C. Greater change in plasma osmolarity
D. Higher urine osmolarity
E. Higher urine flow rate
Asked by Marden, Last updated: May 27, 2020

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John Smith

John Smith

Answered Sep 09, 2016

Higher urine osmolarity- after drinking distilled water, subject a will have an increase in intracellular fluid (icf) and extracellular fluid (ecf) volumes, a decrease in plasma osmolarity, a suppression of antidiuretic hormone (adh) secretion, and a positive free-water clearance (ch2o), and will produce dilute urine with a high flow rate. subject b, after drinking the same volume of isotonic nacl, will have an increase in ecf volume only and no change in plasma osmolarity. because subject bs adh will not be suppressed, he will have a higher urine osmolarity, a lower urine flow rate, and a lower c h2o than subject a.
 

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