The Main Purpose of the Blood-Brain Barrier Is to

Multiple Choice

The main purpose of the blood-brain barrier is to

A) stop the movement of certain molecules from the bloodstream into the brain.
B) protect the bloodstream from neuronal debris.
C) stop neurotransmitters from passing into the bloodstream.
D) prohibit the movement of any molecules from the bloodstream into the brain.
E) protect endothelial cells from damage caused by neuronal activity.