astrocytes

Astrocytes are star-shaped cells in the brain and spinal cord that support and protect neurons, the nerve cells responsible for communication in the nervous system. They help maintain the environment around neurons by regulating chemical levels, providing nutrients, and removing waste. Astrocytes also contribute to forming the blood-brain barrier, which shields the brain from harmful substances. Additionally, they play a role in supporting brain repair and influencing how neurons connect and communicate. Overall, astrocytes are essential for maintaining a healthy, functioning nervous system.