Q. PCT helps in the maintenance of pH in the body fluid by
A) Selective secretion of $H^{+}$ ions
B) Selective secretion of ammonia
C) Selective secretion of $K^{+}$ ions
D) All of the above
Explanation
All of above. Nearly all of the essential nutrients and 70-80 per cent of electrolytes and water are reabsorbed by this segment. PCT also helps to maintain the pH and ionic balance of the body fluids by selective secretion of hydrogen ion and potassium ions into the filtrate and by absorption of $HCO_{3}^{-}$ from it
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.