Explain neuroglial cells and their functions.

Neuroglial cells, also known as glial cells or simply glia, are non-neuronal cells that provide support and protection to neurons in the central and peripheral nervous systems.

Neuroglial cells are involved in a range of functions, including providing physical and nutritional support to neurons, maintaining the blood-brain barrier, and regulating the chemical environment of the nervous system. They also play a role in repairing and regenerating nervous tissue, and in some cases, can even modulate neuronal activity.