How Does Degeneration of the CNS Differ from That of the PNS

question 23

Multiple Choice

How does degeneration of the CNS differ from that of the PNS?

• A)Only in the PNS does degeneration occur distal to the point of injury.
• B)Oligodendrocytes,like Schwann cells,provide trophic factors to sprouting axons.
• C)Groups of neurons in the vicinity of a lesion are more likely to die in the CNS than PNS.
• D)In the PNS,the clearance of debris of necrotic tissue occurs more slowly than in the CNS.

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