Myelinated Nerve #2
by Steve Gschmeissner/science Photo Library
Title
Myelinated Nerve #2
Artist
Steve Gschmeissner/science Photo Library
Medium
Photograph - Photograph
Description
Myelinated nerve. Coloured transmission electron micrograph (TEM) of a myelinated nerve fibre. Myelin(orange) is an insulating fatty layer that surrounds nerve fibres, increasing the speed at which nerve impulses travel. It is formed when Schwann cells (green) wrap around the fibre, depositing layers of myelin between each coil. The outermost layer consists of the Schwann cell's cytoplasm and is known as the nuerolemma or sheath of Schwann. A yellow basement membrane surrounds the schwann cells.The nerve fibres are surrounded by endoneurium a delicate connective tissue that contains collagen (blue). Magnification: x8, 000 when printed at 10 centimetres wide
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May 8th, 2022
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