Neurolemma
Neurolemma
Neurolemma (pronounced: /nʊərəˈlɛmə/), also known as the Schwann cell membrane or sheath of Schwann, is the outermost layer of the nerve fiber in peripheral nerves. The term is derived from the Greek words "neuron" meaning nerve and "lemma" meaning husk or peel.
Etymology
The term "neurolemma" was first used in the mid-19th century and is derived from the Greek words "neuron" (νεῦρον), meaning "nerve", and "lemma" (λῆμμα), meaning "husk" or "peel". This reflects the function of the neurolemma as a protective layer for the nerve fiber.
Function
The primary function of the neurolemma is to protect and insulate nerve fibers, facilitating the rapid transmission of nerve impulses. It also plays a crucial role in the regeneration of damaged nerve fibers in the peripheral nervous system.
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 Schwann Cells' membranes.
- Node of Ranvier: A gap in the myelin sheath of a nerve, between adjacent Schwann cells.
- Peripheral Nervous System: The part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord.
See Also
External links
- Medical encyclopedia article on Neurolemma
- Wikipedia's article - Neurolemma
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