Blood-Brain Barrier
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BIOLOGY
Neuroscience
Blood-Brain Barrier
A microscopic gatekeeper fiercely controls what enters the brain’s sanctuary
19 hours ago
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What is the primary reason the blood-brain barrier selectively allows some substances to pass while blocking others?
To protect the brain from harmful substances while supplying essential nutrients
To allow all blood components to freely enter the brain
Because the brain does not require nutrients from the bloodstream
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