False about blood brain barrier is_______________?
Correct answer: A. There are gaps between tight junctions at the active sites
- A. There are gaps between tight junctions at the active sites
- B. There are no gaps between active sites
- C. Less activity in the membrane
- D. Fibronectin provides a barrier for diffusion
Explanation
The blood-brain barrier is formed by continuous endothelial tight junctions, so gaps are not present between adjacent endothelial cells. Low membrane activity and supporting basement-membrane components also help restrict diffusion.
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