Which is TRUE regarding renal tubular reabsorption?
A. Reabsorption of Na+ only occurs from nephron regions that come after the descending limb of the loop of Henle.
B. Toxic substances are removed from the body by reabsorption from peritubular capillaries into the proximal tubule.
C. Urea reabsorption cannot occur at any point along the nephron.
D. Reabsorption of Na+ from the proximal tubule occurs as a result of water reabsorption.
E. Reabsorption of glucose saturates at a maximum transport rate.
Answer: E
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