ANATOMY

Detailed explanation-1: -Oligodendrocytes. Oligodendrocytes provide support to axons of neurons in the central nervous system, particularly those that travel long distances within the brain. They produce a fatty substance called myelin, which is wrapped around axons as a layer of insulation.

Detailed explanation-2: -Schwann cells are the glial cells that form the myelin sheath on axons outside the brain. Unlike oligodendrocytes, Schwann cells do not have multiple cellular extensions, but instead each cell engulfs a segment of axon and forms a multilayered myelin sheath around it (Figure 3).

Detailed explanation-3: -Neuroglia in the CNS include astrocytes, microglial cells, ependymal cells, and oligodendrocytes.