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: Pathology
Neuroglia responsible for phagocytosis is - 
Select and explain. 
A. Fibrous Astrocytes, B. Protoplasmic Astrocytes, C. Oligodendrocytes, D. Microglia
D: Microglia
Answer: D: Microglia 
Explanation: Microglial cells are the major phagocytic cells in C.N.S. At the time of injury microglial cells modify to form macrophages called Gitter cells.
Oligodendrocytes  → They secrete myelin sheath in CNS
Schwann cells    →  They secrete myelin sheath in the peripheral nervous system.