Question

Wallerian degeneration occurs when:

Answer 1

Wallerian degeneration is an active process of degeneration that results when a nerve fiber is cut or crushed and the part of the axon distal to the injury (i.e. farther from the neuron's cell body) degenerates.

Answer 2

Wallerian degeneration occurs when a nerve fiber is crushed, frozen, or cut and degeneration of part of the axon distal (the part of the nerve that’s furthest away from the neuron’s cell body) begins.