The blood-brain barrier is effective against the passage of ________.
A) water
B) nutrients such as glucose
C) respiratory gases
D) fats
E) metabolic waste such as urea

Question

Quizplus · Accepted Answer

The blood-brain barrier is highly selective, allowing essential substances like water, nutrients, and respiratory gases to pass through, but it effectively blocks many metabolic wastes, including urea, from entering the brain tissue.

The Blood-Brain Barrier Is Effective Against the Passage of ________