Which of the following molecules would be able to passively cross the blood-brain barrier?

Question

Quizplus · Accepted Answer

Small, uncharged molecules are able to passively diffuse through the blood-brain barrier. This is because the barrier is made up of tightly packed endothelial cells and only allows molecules that are small enough to fit through tight junctions to pass through. Large, charged molecules like proteins, glucose, and amino acids require specialized transporters or channels to cross the barrier.

Which of the Following Molecules Would Be Able to Passively