MEDICAL PHYSIOLOGY

Detailed explanation-1: -Myelin is made by oligodendrocytes in your brain and spinal cord (your central nervous system [CNS]) and by Schwann cells in your peripheral nervous system. Your peripheral nervous system is the network of nerves outside of your CNS. These nerves communicate between your CNS and the rest of your body.

Detailed explanation-2: -The oligodendrocytes are capable of producing the myelin sheath that will wrap around a spinal nerve. A spinal nerve is in the PNS, and oligodendrocytes are in the CNS. The nodes of Ranvier function in slowing the conduction of the impulse.

Detailed explanation-3: -Oligodendrocytes are the myelinating cells of the central nervous system (CNS). They are the end product of a cell lineage which has to undergo a complex and precisely timed program of proliferation, migration, differentiation, and myelination to finally produce the insulating sheath of axons.

Detailed explanation-4: -To act as an electric insulator, the myelin sheath is formed as a multilamellar membrane structure by the spiral wrapping and subsequent compaction of the oligodendroglial plasma membrane around central nervous system (CNS) axons.