Yolanda was born with a rare genetic disease in which the proximal tubules of her nephrons express half the number of aquaporins as is typical. What will be the result?
A. Reduced reabsorption of water, Na+, and glucose in the proximal tubules
B. Reduced reabsorption of both water and Na+ in equal proportions
C. Reduced reabsorption of all materials in the proximal tubules
D. Reduced reabsorption of water, although as much reabsorption of Na+ as is typical
E. No change to reabsorption at this site
Answer: D
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