Collateral sprouting describes which process?

Collateral sprouting describes which process?

• A. Demyelination of peripheral nerves.
• B. Apoptosis of motor neurons due to excitotoxicity.
• C. Progressive loss of motor neurons due to autoimmune attack.
• D. The process where neighboring dendrites form new connections to restore function.

Answer: (D)

Collateral sprouting is a form of neural plasticity where surviving neurons grow new connections to compensate for lost input after injury. When a nerve is damaged, nearby intact neurons can extend new branches and form synapses with denervated targets, helping to restore function even as the damaged pathways are being repaired. This adaptive growth and reorganization of synaptic connections underlie partial functional recovery and illustrate the nervous system’s capacity to rewire itself. It’s different from processes that involve degeneration or loss of neurons or myelin, which reduce function rather than build new connections. In short, collateral sprouting describes neighboring neurons forming new connections to help restore function.

Collateral sprouting is a form of neural plasticity where surviving neurons grow new connections to compensate for lost input after injury. When a nerve is damaged, nearby intact neurons can extend new branches and form synapses with denervated targets, helping to restore function even as the damaged pathways are being repaired. This adaptive growth and reorganization of synaptic connections underlie partial functional recovery and illustrate the nervous system’s capacity to rewire itself. It’s different from processes that involve degeneration or loss of neurons or myelin, which reduce function rather than build new connections. In short, collateral sprouting describes neighboring neurons forming new connections to help restore function.