This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Introduction to Central Nervous System, Subject name: Physiology
[{'content': 'In central nervous system, the cell that scavenges the debris created after breakdown of an axon and its myelin: \nSelect and explain. \nA. Microglia, B. Macrophages, C. Astrocytes, D. Neutrophils', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Macrophages are responsible for the phagocytosis of various cell debris in the body. Macrophages in various organs are given special names. eg: Kupffer cells - liver Microglia - brain Osteoclasts - bone Dust cells - lungs.', 'role': 'assistant'}]