GENERAL HISTOLOGY

Detailed explanation-1: -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-2: -How do Schwann cells form the myelin sheath? The plasma membrane of Schwann cells, which contains high amount of lipid, forms the myelin sheath. The cholesterol present in the plasma membrane is essential for assembling the myelin sheath.

Detailed explanation-3: -Schwann cells (SCs) are a type of glial cell that surrounds neurons, keeping them alive and sometimes covering them with a myelin sheath, and are the major glial cell type in the peripheral nervous system. They play essential roles in the development, maintenance, function, and regeneration of peripheral nerves.