Myelinated nerve detail, TEM

Numéro d’image : 13406467
Myelinated nerve detail, TEM
Myelinated nerve. Coloured transmission electron micrograph (TEM) of part 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 wrap around the fibre, depositing layers of myelin between each coil. The outermost layer consists of the Schwann cell's cytoplasm (pink) and is known as the nuerolemma or sheath of Schwann. A basement membrane surrounds the schwann cells. The nerve fibres are surrounded by endoneurium a delicate connective tissue that contains collagen (blue). Magnification: x25, 000 when printed at 10 centimetres wide.
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4572 px × 4340 px
Model Release : Non requis
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