Oligodendrocytes make myelin in the CNS.

Oligodendrocytes make myelin in the CNS.

• A. False
• B. Not applicable
• C. Not sure
• D. True

Answer: (D)

Oligodendrocytes are the myelinating cells of the central nervous system. They extend multiple processes that wrap around segments of several nearby axons, forming the myelin sheath that insulates axons in the brain and spinal cord. This insulation speeds nerve impulses through saltatory conduction, as signals jump between the nodes of Ranvier. In the peripheral nervous system, Schwann cells perform the same insulating role but each Schwann cell myelinates a single axon segment. So the statement is true.

Oligodendrocytes are the myelinating cells of the central nervous system. They extend multiple processes that wrap around segments of several nearby axons, forming the myelin sheath that insulates axons in the brain and spinal cord. This insulation speeds nerve impulses through saltatory conduction, as signals jump between the nodes of Ranvier. In the peripheral nervous system, Schwann cells perform the same insulating role but each Schwann cell myelinates a single axon segment. So the statement is true.