The structure protecting the brain by preventing passage of harmful substances and pathogens would be
A) dura mater.
B) arachnoid mater.
C) cerebrospinal fluid.
D) blood brain barrier.
E) All of these answer choices are correct.

Question

Quizplus · Accepted Answer

The blood-brain barrier is a selective permeability barrier that protects the brain by preventing harmful substances and pathogens from entering the brain tissue from the bloodstream.

The Structure Protecting the Brain by Preventing Passage of Harmful