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erastova [34]
3 years ago
15

The major disadvantage of a blood-brain barrier is that ____.​

Biology
1 answer:
aalyn [17]3 years ago
4 0

<span>The answer is a certain required chemicals must be actively transported.  Blood brain barrier is a selective membrane that separates blood circulating from the brain and the fluid of extracellular in the central nervous system. This is also called a filtering mechanism, the capillaries that carry blood to the brain and spinal cord tissue blocking the path way of the certain substance.</span>

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THis is the required answer.

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