1. Structural Support: They provide a scaffold for neurons, ensuring proper spatial arrangement in the CNS. 2. Metabolic Support: They regulate the nutrient and ion balance within the neural environment. 3. Blood-Brain Barrier: Astrocytes contribute to the formation and maintenance of the blood-brain barrier by interacting with endothelial cells. 4. Neurotransmitter Regulation: They uptake and recycle neurotransmitters like glutamate and GABA, maintaining synaptic efficiency. 5. Repair and Scarring: In case of injury, astrocytes proliferate and form a glial scar to protect the remaining neural tissue.
