What role do glial cells play in the nervous system?

Glial cells play a crucial supportive role in the nervous system, contributing to various functions that are vital for neurons' health and functionality. These cells not only provide physical support to neurons but also help in maintaining the homeostasis of the neuronal environment, ensuring optimal conditions for neuronal activity.

They are involved in numerous processes, such as regulating the extracellular environment by maintaining ion balance, modulating neurotransmitter levels, and providing metabolic support. Additionally, glial cells participate in the repair and scarring processes following neural injury, showcasing their role in protecting neurons.

This supportive framework is essential for the overall functioning of neural circuits and contributes significantly to the efficiency and health of the nervous system.