Which Structures Create the Blood Brain Barrier (BBB)

Multiple Choice

Which structures create the blood brain barrier (BBB) ?

A) Gap junctions between endothelial cells that form the capillary walls
B) Tight junctions between endothelial cells that form the capillary walls
C) Gap and tight junctions between astrocytes and endothelial cells that form the capillary walls
D) Desmosomes and tight junctions between astrocytes and ependymal cells that form the capillary walls
E) Gap junctions between ependymal cells and endothelial cells that form the capillary walls