After damage to the axon of a cell,the following sequence (A to E)occurs in the peripheral nervous system (PNS).However,in the CNS,the last step is usually:
A)Degeneration of the distal axon.
B)Chromatolysis in the cell body.
C)Sprouting of new branches.
D)Axon regrowth along the original pathway.
E)Reinnervation of the target.

Question

Quizplus · Accepted Answer

In the CNS, the last step of axon repair, which is typically reinnervation of the target in the PNS, is often unsuccessful. Instead, sprouting of new branches occurs, but these often do not successfully reinnervate the original target due to the inhibitory environment of the CNS, which limits axon regrowth and functional recovery.

After Damage to the Axon of a Cell,the Following Sequence