page_title: Motor nerve
section_title: Neuroregeneration
hierarchical_section_title: Motor nerve / Neuroregeneration
caption_attribution_description: English: This image shows the dentate gyrus of the hippocampus of a young mice. Dyied in green we can see "the trees" (neural stem cells) and in red the astrocytes surrouding them. These cells help in the storage of memory in mammals.
context_page_description: A motor nerve is a nerve located in the central nervous system, usually the spinal cord, that sends motor signals from the CNS to the muscles of the body. This is different from the motor neuron, which includes a cell body and branching of dendrites, while the nerve is made up of a bundle of axons. Motor nerves act as efferent nerves which carry information out from the CNS, as opposed to afferent nerves, which send signals from sensory receptors in the periphery to the CNS. There are also nerves that serve as both sensory and motor nerves called mixed nerves.
context_section_description: There are problems with neuroregeneration due to many sources, both internal and external. There is a weak regenerative ability of nerves and new nerve cells cannot simply be made. The outside environment can also play a role in nerve regeneration. Neural stem cells (NSCs), however, are able to differentiate into many different types of nerve cells. This is one way that nerves can "repair" themselves. NSC transplant into damaged areas usually leads to the cells differentiating into astrocytes which assists the surrounding neurons. Schwann cells have the ability to regenerate, but the capacity that these cells can repair nerve cells declines as time goes on as well as distance the Schwann cells are from site of damage.
caption: Neural stem cells seen in green
exif: {"Image Orientation": "Horizontal (normal)", "Image Software": "Microsoft Windows Photo Viewer 6.1.7600.16385", "Image DateTime": "2014:06:13 16:56:52", "Image ExifOffset": "2200", "Image Padding": "[]", "EXIF Padding": "[]"}