Absorption of which electrolyte is significantly increased by the action of aldosterone in the distal colon?
Show answer and explanation
Correct answer: Sodium
Aldosterone increases the number of ENaC (epithelial sodium channels) in the apical membrane of the distal colon. This enhances sodium reabsorption and secondarily promotes potassium secretion.
Keep practicing
More Absorption mechanisms questions
- Zollinger-Ellison syndrome (excess gastrin) causes steatorrhea (fatty stools) primarily because:
- Medium-chain triglycerides (MCTs) are often used in clinical nutrition for patients with malabsorption because:
- Which mechanism is primarily responsible for glucose absorption in the small intestine?
- Which part of the gastrointestinal tract is the major site for nutrient absorption?
- Fructose is absorbed from the intestine mainly by:
- Which form of protein digestion product is absorbed most efficiently?