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