Final answer:
An oligodendrocyte can myelinate several axons, unlike Schwann cells that can only myelinate one axon segment, highlighting the efficiency of myelination in the CNS.
Step-by-step explanation:
Each oligodendrocyte can myelinate multiple axons in the central nervous system (CNS), distinguishing it from Schwann cells in the peripheral nervous system (PNS), which can only myelinate a single axon segment.
This key difference demonstrates how oligodendrocytes are efficient in their myelination process, potentially insulating several axons at once, thereby playing a crucial role in the rapid transmission of nerve impulses across the CNS.