<prompt> The function of oligodendrocyte is -Myelinates the CNSNutrition of nervous tissueLining the cavities of the CVSBehave like macrophages  <response>: The principal function of oligodendrocytes is the production and maintenance of myelin in CNS - RobbinsMyelination in Central nervous system OligodendrocytesMyelination in Peripheral nervous system Schwann cells 