The blood-brain barrier
A)filters the entry of solutes from the blood into the cerebrospinal fluid.
B)is formed by oligodendrocytes.
C)tightly regulates the intracellular environment of the CNS.
D)uses chemical signals to communicate with the spinal cord.
E)provides support to the brain tissue.

Question

Quizplus · Accepted Answer

The blood-brain barrier filters the entry of solutes from the blood into the cerebrospinal fluid, allowing only selected molecules to pass through. This helps to protect the CNS from harmful molecules and pathogens.

The Blood-Brain Barrier