This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Function of I cells of kidney - 
Select and explain. 
A. Na+ reabsorption, B. Cl- reabsorption, C. H+ secretion, D. K+ secretion
C: H+ secretion
Answer: C: H+ secretion 
Explanation: Ans. is'c'i.e., H+ secretionCollecting duct has :-Principal cells (P cells), which are involved in Na+ reabsorption and ADH stimulated water reabsorption.Intercalated cells (I cells) which are concerned with acid (H.) secretion and HCO transPo