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': 'Which of the following is found in the respiratory zone of the lung? \nSelect and explain. \nA. Goblet cells, B. Main bronchi, C. Mucous cells, D. Type I epithelial cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: There are two zones in the lung;the conducting zone (where there is no gas exchange) and the respiratory zone (where there is gas exchange). Of all of the structures listed, only Type I epithelial cells are located in the respiratory zone. Type II epithelial cells, also located in the alveoli, are the cells that produce surfactant. Goblet cells, which are mucus-secreting cells, are present in the conducting airways. The main bronchi are pa of the conducting airways.Mucous cells , which are mucus-secreting cells, are present in the conducting airways.', 'role': 'assistant'}]