In the process known as Wallerian degeneration,
A)the axon proximal to the injury degenerates.
B)macrophages remove the debris of damaged axons.
C)Schwann cells completely degenerate.
D)no trace is left of the path taken by a previous axon.
E)All of the answers are correct.

Question

Quizplus · Accepted Answer

During Wallerian degeneration, macrophages are responsible for removing the debris of damaged axons. The axon proximal to the injury may also degenerate, but this is not always the case. Schwann cells do not completely degenerate, as they play a role in the regeneration of the axon. While the previous path of the axon may not be exactly replicated, some of the original neurites can be used as a guide for regrowth. So, options A, C and D are incorrect, and option B is the best choice.

In the Process Known as Wallerian Degeneration