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': 'Which of the following not true about alveolar lining? \nSelect and explain. \nA. Type II cells make up 95% of the lining, B. Type II cells contain lamellar inclusion bodies, C. Type II cells secrete surfactant, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: The alveoli contain two types of epithelial cells. Type I cells are flat cells with large cytoplasmic extensions and are the primary lining cells of the alveoli, covering approximately 95% of the alveolar epithelial surface area. Type II cells (granular pneumocytes) are thicker and contain numerous lamellar inclusion bodies. A primary function of these cells is to secrete surfactant; however, they are also impoant in alveolar repair as well as other cellular physiology. Although these cells make up approximately 5% of the surface area, they represent approximately 60% of the epithelial cells in the alveoli. Ref: Ganong's Review of Medical Physiology 23rd edition, Chapter 35.", 'role': 'assistant'}]