Question

The reabsorption of water from the Loop of Henle depends on the movement of ______ out of the tubule.

a) Sodium
b) Potassium
c) Chloride
d) Urea

Answer 1

The reabsorption of water from the Loop of Henle depends on the active transport of sodium (Na+) out of the tubule, which causes water to follow it. Aquaporins also play a role in the independent reabsorption of water into the peritubular capillaries.

Step-by-step explanation:

The movement of sodium (Na+) out of the tubule is responsible for the reabsorption of water from the Loop of Henle. Sodium is actively transported out of the tubule, and water follows it to even out the osmotic pressure. Additionally, water is independently reabsorbed into the peritubular capillaries due to the presence of aquaporins in the renal tubule.