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Astrocytes
...  under the microscope, you can easily distinguish them by their shape. Physiologically, the astrocytes play different roles in the body. Here are some of the notable significances of the cells. blood brain barrier Astrocytes form part of the blood brain barrier. The long processes combine with the endothelial cells to make a distinction from the circulating blood and the cerebrospinal fluid  ...

Blood Brain Barrier
...  blood brain barrier serves as the brain’s protection from its environment. It separates the circulating blood from the cerebrospinal fluid. The endothelial cells in tight junction create the boundary between the two fluids. They are responsible in restricting the flow of substances in the area. The projections of the Astrocytes, called the astrocytic feet or the glia limitans, surround  ...