What is a neurilemma?

The neurilemma, also known as the Schwann sheath, is a protective layer surrounding the axons of peripheral nerves. It is formed by Schwann cells, which wrap around the axon and play a crucial role in nerve regeneration and repair. The neurilemma contains the cell membrane of Schwann cells and is essential for the maintenance and support of the nerve fibers, especially in promoting the regeneration of damaged nerves.