Myelinated nerves. Coloured scanning electron micrograph (SEM) of a freeze-fracture through peripheral nerves to show Schwann cells (red) and myelinated nerves (pink). A Schwann cell wraps its cell membrane around the nerve a number of times. In-between each cell membrane layer is a layer of myelin,an electrically insulating fatty layer. A Schwann cell effectively thickens a nerve's membrane and increases the speed at which nerve impulses are relayed. The Schwann cell's cytoplasm surrounds the axons (beige) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 3507 px × 3008 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |