What is the primary role of glial cells in the nervous system?

• A. Conduct nerve impulses
• B. Support and protect neurons
• C. Regenerate damaged neurons
• D. Store neurotransmitters

Answer: (B)

The primary role of glial cells in the nervous system is to support and protect neurons. These cells outnumber neurons in the brain and play crucial roles in maintaining homeostasis, forming myelin, and providing support and protection for neurons.

Glial cells help with the maintenance of the neuronal environment by regulating ions, removing excess neurotransmitters, and providing nutrients. They also play essential roles in immune defense within the central nervous system and contribute to the repair processes following injury.

While other functions, such as conducting nerve impulses, are primarily the responsibility of neurons, glial cells significantly enhance overall neuronal function by creating a supportive framework and facilitating communication within the nervous system. Their involvement is vital for ensuring that neurons can operate effectively and efficiently to transmit information throughout the body.