Wallerian Degeneration Quiz

What is Wallerian degeneration?

• The growth of new neurons

• The degeneration of the axon distal to the injury

• The thickening of the myelin sheath

• The repair of muscle tissue

Which part of the neuron degenerates in Wallerian degeneration?

• The cell body

• The dendrites

• The distal axon

• The synapse

Which cells help remove debris during Wallerian degeneration?

• Astrocytes

• Microglia

• Schwann cells

• Oligodendrocytes

What happens to the myelin sheath during Wallerian degeneration?

• It remains intact

• It thickens

• It degenerates

• It forms new synapses

What kind of cell clears myelin debris in the peripheral nervous system?

• Microglia

• Schwann cells

• Oligodendrocytes

• Astrocytes

What is a characteristic of Wallerian degeneration in the CNS?

• Efficient debris clearance

• Slow and limited regeneration

• Immediate repair

• Formation of new neurons

What is the ultimate goal of Wallerian degeneration?

• To destroy the nerve permanently

• To prepare the nerve for regeneration

• To form a scar

• To create new neurons

How soon does Wallerian degeneration start after an injury?

• Immediately

• Within 24-48 hours

• After one week

• After one month

In which nervous system is Wallerian degeneration more efficient?

• Central nervous system (CNS)

• Peripheral nervous system (PNS)

• Both are equally efficient

• Neither undergoes Wallerian degeneration

What typically forms at the end of the proximal segment of an injured axon?

• Neuroma

• Growth cone

• New synapse

• Scar tissue