________ interstitial osmolarity allows urine to be concentrated.
A) High medullary
B) Low medullary
C) High cortex
D) Low cortex

Question

Quizplus · Accepted Answer

The high medullary interstitial osmolarity is necessary for urine concentration, as this is where the loop of Henle and the collecting ducts are located, which are responsible for the majority of water reabsorption. The high osmolarity allows for water to be reabsorbed from the urine and into the bloodstream, leading to concentrated urine.

________ Interstitial Osmolarity Allows Urine to Be Concentrated