Physiology What are the major functions of “P” cells present in coical collecting ducts? A Sodium & water reabsorption from the lumen. B Potassium secretion into the lumen. C ADH controlled water reabsorption. D All of the above 💡 Explanation What are the major functions of "P" cells present in coical collecting ducts? ✓ Correct Answer: D. All of the above