MCAT Biology Question — Aldosterone Action
- Apr 22, 2017
- MCAT Question of the Day
- increasing water permeability of the collecting duct
- increasing water permeability of the ascending limb of the loop of Henle
- increasing water permeability in the proximal tubule
- increasing sodium absorption and potassium secretion in the distal tubule
Click for Explanation
A. Increasing water permeability of the collecting duct, incorrect, Antidiuretic Hormone (also known as ADH and vasopressin) causes increased water permeability in the collecting duct.
B. Increasing water permeability of the ascending limb of the loop of Henle, incorrect, The ascending limb of the loop of Henle is nearly impermeable to water.
C. Increasing water permeability in the proximal tubule, incorrect, Water reabsorption occurs in the descending limb of the loop of Henle, the collecting tubule, and the collecting duct.
D. Increasing sodium absorption and potassium secretion in the distal tubule, correct.
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