<p>[[1]] are involved in supportive&nbsp; structural and metabolic&nbsp; events, as well as repairing damaged cells, regulating neuronal communication and maintaining the blood-brain barrier (keeping blood from entering the brain)&nbsp;</p><p>[[2]] are responsible for the formation and maintenance&nbsp; of the myelin that ensheaths the axons, allowing for efficient communication between&nbsp; neurons<br></p><p>[[3]] are the myelinating glia of the spinal cord and peripheral nervous system<br></p><p>[[4]] are found in the walls of the ventricles, where they produce cerebrospinal fluid, which circulates around the brain removing waste products, washing it over at night, and protecting the brain from injury&nbsp;<br></p><p>[[5]] are a part of the peripheral nervous system and play both a supportive and protective role of regulating the neural environmental for the peripheral nerves&nbsp;</p><p>[[6]] are fundamental for neurogenesis and neural migration (the movement of new neurons through the brain).<br></p><p><br></p>