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Neuroscience

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PNS vs CNS Repair

NEURO-QQ97Z4

The way the peripheral and central nervous system response and repair injuries to tissue and neurons is different and a great focus of research.

What is the primary and most important difference in the way the peripheral and central nervous systems respond and repair injuries?

A

Sensory information is lost in PNS injury and not in CNS injury.

B

The PNS can repair axons and regain connections that were lost. The CNS cannot repair axons easily and connections are rarely regained.

C

Only CNS neurons experience Wallerian degeneration, the dying back of injured axons.

D

Neurotrophic factors, which promote axon regrowth, are only present during PNS injury and not CNS.