The blood brain barrier impedes the passage into cerebral neurons of

Question

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The blood brain barrier is selective in allowing substances to pass through into the brain. It blocks the entry of many proteins and other large molecules, which are too large to pass through the barrier. However, small molecules such as glucose can pass through the barrier. Sodium ions and other charged particles are also restricted, as they cannot easily penetrate the barrier. However, some fluids such as cerebrospinal fluid can pass through the barrier.

The Blood Brain Barrier Impedes the Passage into Cerebral Neurons