Nerve injuries

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5 Terms

1
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Nerve Cells

  • Neurons are specialized cells that carry electrical impulses

  • They have three parts

    • Dendrites:  receive incoming impulses

    • Cell Body:  makes new impulses

    • Axon:  carries new impulse away toward next cell


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Glial Cells

  • Cells that protect or support the neurons

  • They do NOT carry impulses

  • Schwann cells are the most common.  They insulate axons to speed up impulses


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Gray and White Matter

  • Gray matter is actual neurons/synapses

  • White matter is axons covered with Schwann cells


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Synapses

  • Junctions where one neuron communicates chemically with another


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Nerve Tissue

  • Nerve tissue is very delicate due to lack of protein (no collagen) so it is easily damaged

  • Most nerve tissue is protected by bone or muscle

  • Nerve tissue is specialized so it does not regenerate