Question

Place the steps involved in the repair of a peripheral nerve in order from beginning to end.

1. Axon sends buds into network of Schwann cells and then starts growing along cord of Schwann cells.
2. Fragmentation of axon and myelin occurs in distal stump.
3. Axon continues to grow into distal stump and is enfolded by Schwann cells.
4. Schwann cells form cord, grow into cut, and unite stumps.
5. Macrophages engulf degenerating axon and myelin.

Answer 1

Step-by-step explanation:

By self-regeneration process, the peripheral nervous system (PNS), repair its lost part if the cell body it remained intact. The correct order of steps involved in repair is given below:

1. Macrophages engulf degenerating axon and myelin.
2. Axon sends buds into network of Schwann cells and then starts growing along cord of Schwann cells.
3. Fragmentation of axon and myelin occurs in distal stump.
4. Axon continues to grow into distal stump and is enfolded by Schwann cells.
5. Schwann cells form cord, grow into cut, and unite stumps.