Ependymal cells are columner cells that have ciliated surface. They support the central. nervous system and also nutritive in function. Microglia are minute cells which phagocytes pathogens and cellular debris within brain. Astrocytes for sructural support between capillaries and neurons within the CXS and contribute to blood-brain barrier. Oligodendrocytes from myelin in CNS and guide development of neurons within the CNS.