Which cells form myelin around neuronal axons?

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Study for the Neurophysiology Test with flashcards and multiple choice questions, each with hints and explanations. Enhance your understanding of cell types, signals, and sensory pathways. Ace your exam!

Multiple Choice

Which cells form myelin around neuronal axons?

Explanation:
Myelin around axons is formed by glial cells. In the central nervous system, oligodendrocytes wrap segments of several nearby axons, creating the myelin sheath. In the peripheral nervous system, Schwann cells wrap around a single axon segment to produce myelin. This insulation increases the speed of electrical signaling via saltatory conduction, with nodes of Ranvier between myelin segments. Neurons themselves don’t generate myelin, and muscle or blood cells don’t form myelin either.

Myelin around axons is formed by glial cells. In the central nervous system, oligodendrocytes wrap segments of several nearby axons, creating the myelin sheath. In the peripheral nervous system, Schwann cells wrap around a single axon segment to produce myelin. This insulation increases the speed of electrical signaling via saltatory conduction, with nodes of Ranvier between myelin segments. Neurons themselves don’t generate myelin, and muscle or blood cells don’t form myelin either.

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