By the time the filtrate reaches the loop of Henle, the reabsorption of water and ions has
A) left the filtrate hypoosmotic.
B) removed all of the potassium from the filtrate.
C) left the filtrate hyperosmotic.
D) left the filtrate iso -osmotic.
E) removed all of the sodium from the filtrate.

Question

Quizplus · Accepted Answer

By the time the filtrate reaches the loop of Henle, it is iso-osmotic to blood plasma because the proximal tubule reabsorbs water and ions in proportionate amounts, maintaining osmotic balance.

By the Time the Filtrate Reaches the Loop of Henle