Astrocytes and tight junctions create a barrier to viruses and bacteria known as:
A)choroid plexuses.
B)dural sinuses.
C)the blood-brain barrier.
D)meninges.

Question

Quizplus · Accepted Answer

Astrocytes and tight junctions make up the blood-brain barrier, which is a selective barrier that prevents harmful substances such as viruses and bacteria from entering the brain. The choroid plexuses produce cerebrospinal fluid, the dural sinuses drain blood from the brain, and the meninges are protective membranes that surround the brain and spinal cord but do not create a barrier to pathogens.

Astrocytes and Tight Junctions Create a Barrier to Viruses and Bacteria