When an axon is damaged,retrograde degeneration may occur
A) in neurons that receive input from the damaged cell.
B) in neurons that synapse onto the damaged cell.
C) in the cell body attached to the damaged axon.
D) between the break and the axon's terminal.

Question

Quizplus · Accepted Answer

Retrograde degeneration occurs in the cell body attached to the damaged axon. This is because the axon is an extension of the cell body and if it becomes damaged, it sends signals back towards the cell body indicating that it needs repair or removal. Therefore, retrograde degeneration only occurs in the cell body of the damaged axon, not in neurons that receive input from or synapse onto the damaged cell, or between the break and the axon's terminal.

When an Axon Is Damaged,retrograde Degeneration May Occur