Aquaporins allow which substance to pass through the descending limb of the loop of Henle?

A nephron consists of which of the following structures?

Which part of the nephron performs the majority of water reabsorption?

What happens when the concentration of Na+ decreases in the ascending limb of the nephron?

What are the two major components of a nephron?

What does the countercurrent mechanism accomplish in the nephron loop?

Which structure in the nephron collects urine from the distal convoluted tubule?

Most water is reabsorbed from the filtrate by which region of the nephron?