Which process describes the degenerative changes occurring in the distal segment of a severed peripheral nerve?
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Correct answer: Wallerian degeneration
Wallerian degeneration involves the fragmentation and disappearance of the axon and myelin sheath distal to the site of injury. This process prepares the distal endoneurial tube for potential regenerating axonal sprouts.
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More Nerve Regeneration questions
- What is the first histological sign of nerve injury visible in the neuronal cell body (perikaryon)?
- Which cell type is primarily responsible for phagocytosing myelin debris and axonal fragments during peripheral nerve regeneration?
- The 'Bands of Büngner' are formed by which of the following?
- What is the typical rate of axonal regrowth in a regenerating human peripheral nerve?
- Why is nerve regeneration significantly more successful in the Peripheral Nervous System (PNS) than in the Central Nervous System (CNS)?
- What is the clinical consequence if a regenerating axon fails to find its original endoneurial tube and forms a disorganized mass?