Question
Biology Question on excretory system
Which part of the nephrons is impermeable to water?
A
Proximal convoluted tubule
B
Distal convoluted tubule
C
Ascending limb of loop of Henle
D
Descending limb of loop of Henle
Answer
Ascending limb of loop of Henle
Explanation
Solution
Ascending limb of loop of Henle is impermeable to water. It does not reabsorb water, rather sodium, potassium, magnesium and chloride are reabsorbed and therefore the filtrate becomes hypotonic to blood plasma.