Which glial cell insulates axons in the CNS?

1. The CNS and PNS use different insulating cells. 2. The CNS one is often shortened to oligo. 3. The oligodendrocyte is the glial cell type that insulates axons in the CNS. 4. So the answer is the oligodendrocyte. _Source: OpenStax 'Anatomy and Physiology 2e', Ch 12 'The Nervous System and Nervous Tissue'_