This lecture focuses on the structural and functional differences between the two main types of cells in the central nervous system: neurons and glial cells. The name glia ("glue") derives from the historical view that glia simply hold the brain together, but modern neuroscience has revealed that these cells have many other functions. There are about 100 billion neurons and 10 to 100 times that many glial cells in the brain.
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Ready to Watch Understanding the Brain, Season 1, Episode 8?