This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'In a healthy individual on a normal diet, which of the following ion is completely absorbed in tubules, except? \nSelect and explain. \nA. Na2+, B. K+, C. Cl-, D. Urea', 'role': 'user'}, {'content': 'Answer: D \nExplanation: UreaOn a normal diet maximum solutes are reabsorbed almost completd: -Glucose : 100%Aminoacids 100%HCO; : 100%Water: 99.4%Na- :99.4%CL :99.2%Uric acid: 98%K. :93.3%Urea: 53%.Total solutes:98.9%RENAL UREA TRANSPO:Urea is secreted into thin descending limb of Henle loop.In Proximal tubule - 40-50% filtered urea reabsorbed.', 'role': 'assistant'}]