Which statement best describes the role of glial cells?

Glial cells play a crucial role in the nervous system, primarily providing support, protection, and nourishment to neurons. One of their key functions is to assist in the repair of damaged neurons. When neural injury occurs, glial cells can actively participate in the healing process by clearing debris caused by cell damage, promoting the survival of injured neurons, and influencing the regrowth of neuronal axons. This ability to aid in repair is vital for maintaining the overall health and functionality of the nervous system.

In contrast, signaling within the nervous system is primarily carried out by neurons, the specialized cells responsible for transmitting impulses and facilitating communication. While glial cells do support and influence neuronal function, they do not transmit electrical signals themselves. Additionally, hormone production is typically a function attributed to endocrine cells rather than glial cells, underscoring the specialized roles different cell types play within the body.