What exactly is the blood-brain barrier?
In: 99
Think of your brain as the city. Powerful and complicated. Activity everywhere doing everything imaginable.
And think of your body as the country side, where all of the resources and factories are.
How does what needs to move flow between the city and the countyside? The network of roads. The vascular system.
Except right at the entrance to the city. There’s a customs office. Passport control. The blood-brain barrier.
It blocks what shouldn’t go onto the brain from entering. It allows what should to pass.
Latest Answers