ANATOMY

Detailed explanation-1: -Schwann cells (SCs) are the main glial cells of the peripheral nervous system which wrap around axons of motor and sensory neurons to form the myelin sheath.

Detailed explanation-2: -Schwann cells make myelin in the peripheral nervous system (PNS: nerves) and oligodendrocytes in the central nervous system (CNS: brain and spinal cord). In the PNS, one Schwann cell forms a single myelin sheath (Figure 1A).

Detailed explanation-3: -In the PNS, the main neuroglia are Schwann cells, satellite glial cells within the ganglia and enteric glia, which support neurons within the enteric nervous system of the gastrointestinal tract.

Detailed explanation-4: -Schwann cells (SCs), named after German physiologist Theodor Schwann (1810–1882), are the main neuroglial cells of the peripheral nervous system (PNS).

Detailed explanation-5: -A well-developed Schwann cell is shaped like a rolled-up sheet of paper, with layers of myelin between each coil. The inner layers of the wrapping, which are predominantly membrane material, form the myelin sheath, while the outermost layer of nucleated cytoplasm forms the neurilemma.