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What is the blood-brain barrier?

waelhammad
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2022-10-19
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What is the blood-brain barrier?

  1. It is the inner two meninges that surround the brain
  2. It is formed by the capillaries of choroid plexus and ependymal cells.
  3. It is the endothelial cells of capillaries that supply the brain, and their astrocytes.
  4. It is the cerebrospinal fl uid that bathes the brain.
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waelhammad
2022-10-19
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C: The BBB is the endothelial cells of the capillaries (which are joined by tight junctions), their basement membrane and the enveloping astrocytic feet of the astrocytes (one of the cell types called neuroglia). 

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