-At which site is the tubular fluid osmolarity lower than the plasma osmolarity in a person who is deprived of water?

Question

Quizplus · Accepted Answer

[Chapter 5, VII B, C]. Under conditions of either water deprivation (antidiuresis) or water loading, the thick ascending limb of the loop of Henle performs its basic function of reabsorbing salt without water (owing to the water impermeability of this segment). Thus, fluid leaving the loop of Henle is dilute with respect to plasma, even when the final urine is more concentrated than plasma.

-At Which Site Is the Tubular Fluid Osmolarity Lower Than