Glial cells, also known as neuroglia or glia, are a type of cells that provide support and protection for neurons in the central nervous system. They are essential for maintaining the structure and function of the nervous system, as well as for regulating the extracellular environment. Glial cells also play a role in neurodevelopment and response to injury or disease. There are several types of glial cells, including astrocytes, oligodendrocytes, and microglia, each with specific functions in the nervous system. Research in the field of glial cells focuses on understanding their role in brain function and dysfunction, as well as potential therapeutic strategies targeting these cells for neurological disorders.