An intact blood brain barrier (BBB) is vital to the development and function of the brain. It controls the exchange of materials between the circulatory system and the brain. Which choice represents the main conclusions from this study

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.