Spinal cord. Coloured scanning electron micrograph (SEM) of a freeze-fractured longitudinal section through the white matter of the spinal cord. The white matter consists of tracts of parallel myelinated nerve fibres. Myelin is a fatty insulating layer that sheaths some nerve fibres. Those which are myelinated are able to transmit electrical nerve signals faster than those without. The spinal cord,housed within the vertebrae of the backbone,links the brain to the rest of the body. Magnification unknown | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 3500 px × 2837 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |