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: Anatomy
[{'content': 'Transitional epithelium or urothelium lines all of the following structures of the urinary system, EXCEPT: \nSelect and explain. \nA. Ureters, B. Minor calyx, C. Urinary bladder, D. Membranous Urethra', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The normal urothelium is composed of 3-7 layers of transitional cell epithelium. It is characterized by a superficial layer of dome like cells that are neither squamous nor columnar. These cells, sometimes called umbrella cells. It lines,Walls of the calicesPelvisUrinary bladderUretersUpper pa of the urethra', 'role': 'assistant'}]