What structure slows or prevents the passage of some drugs and disease-causing organisms to the CNS?

Question

Quizplus · Accepted Answer

The BBB, also known as the blood-brain barrier, is a selective barrier that prevents the passage of certain substances such as drugs and pathogens from the bloodstream into the central nervous system. The nerve root, cauda equina, and meninges do not play a significant role in preventing the passage of these substances.

What Structure Slows or Prevents the Passage of Some Drugs