Physiology Which one of the following statements regarding water re-absorption in the tubules is True? A The bulk of water re-absorption occurs secondary to Na+ re-absorption B Majority of facultative re-absorption occurs in proximal tubule C Obligatory re-absorption is ADH dependent D 20% of water is always re-absorbed irrespective of water balance 💡 Explanation Which one of the following statements regarding water re-absorption in the tubules is True? ✓ Correct Answer: A. The bulk of water re-absorption occurs secondary to Na+ re-absorption