A 15-year-old girl is taken to see a physician because of a sore throat. An antibiotic is prescribed that can enter most tissues of the body but cannot penetrate the blood-brain barrier. The blood-brain barrier can be attributed primarily to which cell type?
The endothelial cells lining all blood vessels in the brain constitute the blood-brain barrier. Tight junctions between endothelial cells forms blood-brain barrier. The purpose of the blood-brain barrier is to protect the chemical environment of the brain from rapid changes in composition that occur normally in the rest of the body fluids.
Astrocyte
Endothelial cell
Glial cell
Macrophage
Introduction to Central Nervous System