What is the function of the glial cells in the nervous system?

Glial cells play a crucial role in the nervous system primarily because they provide support and protection for neurons. Unlike neurons, which are responsible for transmitting electrical signals and processing information, glial cells facilitate several important functions that aid neuronal health and performance. They help maintain the homeostasis of the neural environment, form myelin sheaths that insulate axons to enhance signal transmission, and provide structural support to maintain the integrity of the nervous system. Additionally, glial cells are involved in the response to injury and in modulating neurotransmitter levels, contributing to overall neuronal function and health. This supportive role is vital for the proper functioning of the nervous system as a whole.