Which of the following describes the blood-brain barrier?
A) It is fully developed in humans at birth.
B) It is malleable in order to permit drug compounds into the brain
C) It cannot be penetrated, even with trauma to the brain
D) It prevents many drugs from entering the brain

Question

Quizplus · Accepted Answer

The blood-brain barrier (BBB) is a highly selective permeability barrier that prevents many substances, including a large number of drugs, from entering the brain from the bloodstream, thus protecting the brain from potentially harmful chemicals while allowing essential nutrients to pass through.

Which of the Following Describes the Blood-Brain Barrier