What is the blood brain barrier?

(1 point)
Responses

the feature that helps maintain homeostasis of the brain

the feature that helps maintain homeostasis of the brain

the function of red blood cells providing energy to power neurons

the function of red blood cells providing energy to power neurons

the chain of interactions that allows an electric pulse to be interpreted as taste, smell, and so on

the chain of interactions that allows an electric pulse to be interpreted as taste, smell, and so on

the thin protective membrane that covers the spinal column

The blood-brain barrier is the thin protective membrane that covers the spinal column.