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

Question

Quizplus · Accepted Answer

The BBB is created by tight junctions between endothelial cells that form the walls of the capillaries in the brain. These tight junctions prevent the passage of certain molecules and substances from the blood into the brain tissue, protecting the brain from potential harm.

Which Structures Create the Blood Brain Barrier (BBB)