Physiology Which statement about antidiuretic hormone (ADH) is true? A It is synthesized in the posterior pituitary gland B It increases salt and water reabsorption in the collecting tubules and ducts C It stimulates thirst D It has opposite effects on urine and plasma osmolality 💡 Explanation Which statement about antidiuretic hormone (ADH) is true? ✓ Correct Answer: D. It has opposite effects on urine and plasma osmolality