This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Excretory System (Kidney, Bladder) Acid-Base Balance, Subject name: Physiology
[{'content': '"Diluting segment" of a nephron is: \nSelect and explain. \nA. Descending limb of loop of Henle, B. Thick ascending limb of loop of Henle, C. DCT, D. Collecting duct', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Thick ascending LOH is k/a the diluting segments of the nephron. It is impermeable to water. It has NKCC cotranspoer proteins that reabsorb Na+, K+, 2Cl- ions. Thus,There is a net reabsorption of solutes with no movement of water, making the tubular fluid that reaches the DCT hypotonic.', 'role': 'assistant'}]