Where is the blood-brain barrier located?
Quick Answer
The blood-brain barrier is located in the capillaries of the brain and spinal cord. It is not a single organ, but a protective barrier around the central nervous system.
The Full Story
The blood-brain barrier is found in the specialized blood vessels of the central nervous system, especially the brain. Tight junctions between endothelial cells, along with support from astrocytes and other cells, restrict what can pass from blood into brain tissue. This protects the brain from toxins and helps keep its chemical environment stable. Some substances, like oxygen and glucose, can cross, but many others cannot.
Key Facts
YouTube Angle
Suggested video title for this topic:
"The invisible wall that protects your brain from many things in your blood"
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