To pass the blood-brain barrier a substance must be:
A)Water soluble
B)Fat insoluble
C)Fat soluble
D)None of the above

Question

Quizplus · Accepted Answer

The blood-brain barrier is a selective barrier that only allows certain substances to pass through it and reach the brain. Substances that are fat-soluble, such as oxygen, carbon dioxide, and certain drugs, can easily pass through the blood-brain barrier, while water-soluble substances, such as glucose and amino acids, require the assistance of specialized transport mechanisms. Fat insoluble substances cannot pass through the blood-brain barrier. Therefore, choice C is the best answer as it correctly describes the characteristics of substances that can pass through the blood-brain barrier.

To Pass the Blood-Brain Barrier a Substance Must Be