What is Nervous Tissue? What is its Purpose?
Nervous Tissue is found in the brain, spinal cord, and nerves. The cell that conducts impulses is called a neuron. The other type of cell is called a neuroglial cell. About 10% of nervous tissue is composed of neurons, the rest of the cells are glial cells. The neurons conduct impulses and the glial cells support the neurons. Students should be able to identify a motor neuron and its parts (axon, dendrite, cell body, synaptic bulb).
The following video discusses nervous tissue.
Video 16. View the Nervous Tissue video on YouTube (opens in new window)
Figure 28. A micrograph showing a motor neuron. Notice the nucleus and soma (cell body) in both.
Figure 29. A detailed illustration of a motor neuron showing the axond, dendrites and synaptic bulbs used for transmitting nerve signals.
Self-Check
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