Neurilemma
Neurilemma
Neurilemma (pronunciation: /nʊərɪˈlɛmə/), also known as the Schwann cell sheath, is a layer of cells that encases the axons of many neurons. It is essential for the proper functioning of the nervous system.
Etymology
The term neurilemma originates from the Greek words neuron, meaning "nerve", and lemma, meaning "husk" or "shell". It was first used in the mid-19th century to describe the outermost layer of nerve fibers.
Function
The neurilemma serves several important functions in the body. It aids in the regeneration of damaged nerve fibers by forming a tunnel, or regeneration tube, that guides the growth of new nerve fibers. It also plays a crucial role in the process of myelination, where it helps to form the myelin sheath that insulates and protects nerve fibers.
Related Terms
- Axon: The long, threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.
- Myelin Sheath: The insulating covering that surrounds an axon with multiple layers of myelin, which is composed of protein and fatty substances.
- Schwann Cell: A type of glial cell that produce myelin in the peripheral nervous system.
- Regeneration Tube: A tunnel formed by the neurilemma that guides the growth of a new nerve fiber after the original fiber has been damaged.
See Also
External links
- Medical encyclopedia article on Neurilemma
- Wikipedia's article - Neurilemma
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