Physiology True regarding water absorption in tubules:September 2007 A Majority of facultative reabsorption occurs in proximal tubule B Bulk of water reabsorption occurs secondary to sodium absorption C 25% of water is reabsorbed irrespective of water balance D Obligatory reabsorption is ADH dependent 💡 Explanation True regarding water absorption in tubules:September 2007 ✓ Correct Answer: B. Bulk of water reabsorption occurs secondary to sodium absorption