Q. Out of I. PCT II. DCT III. Loop of Henle IV. Collecting duct Which contributes most in maintaining pH of blood?
A) I and II
B) II and III
C) III and IV
D) I and IV
Explanation
PCT helps to maintain the pH and ionic balance of the body fluid by selective secretion of hydrogen ion, ammonia and potassium ion into filtrate and by absorption of $HCO_{3}^{-}\$from it. DCT capable of reabsorption of $HCO_{3}^{-}$ and selective secretion of hydrogen and potassium and $NH_{3}$ to maintain the pH and sodium-potassium balance in blood
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.