Question

these glue-like cells hold the nerve fibers together and produce myelin

Answer 1

The glue-like cells that hold nerve fibers together and produce myelin are called **glial cells** or **neuroglia**. Specifically, the type of glial cells responsible for producing myelin in the central nervous system (CNS) are called **oligodendrocytes**. In the peripheral nervous system (PNS), the myelin is produced by **Schwann cells**. These cells play a crucial role in supporting and protecting neurons, as well as facilitating the rapid transmission of electrical signals along nerve fibers.