Quiz: The Blood-Brain Barrier

1. Which of the following substances can most easily pass through the blood-brain barrier?
a. caffeine
b. creatine
c. protein
2. There are several reasons why the capillaries of the brain are not as permeable as the other capillaries of the body. One of the reasons is the fact that the capillaries of the brain have __________ while the capillaries of the rest of the body do not.
a. a basal lamina
b. endothelial cells
c. a basal lamina and endothelial cells

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