If an axon was previously myelinated, what happens after it successfully regenerates?
Show answer and explanation
Correct answer: It is re-myelinated by Schwann cells from the Bands of Büngner
Once a regenerating axon reaches its target and makes contact, the associated Schwann cells begin to wrap around it to form a new myelin sheath. However, the new internodes are usually shorter and the myelin thinner than the original.
Keep practicing
More Nerve Regeneration questions
- Following denervation, what characteristic change occurs in the target skeletal muscle?
- Which molecule found in CNS myelin is a major inhibitor of axonal outgrowth?
- Transneuronal (transsynaptic) degeneration refers to:
- The success of peripheral nerve regeneration is most dependent on which factor?
- Which process describes the degenerative changes occurring in the distal segment of a severed peripheral nerve?
- What is the first histological sign of nerve injury visible in the neuronal cell body (perikaryon)?