Which cell type provides supporting functions for neurons?

• A. Neuroglia
• B. Neurons
• C. Astrocyte
• D. Oligodendrocyte

Answer: (A)

Glial cells provide support for neurons. They don’t carry electrical impulses themselves, but they create the environment and infrastructure neurons rely on: supplying nutrients, regulating ion balance, clearing neurotransmitters, offering immune support, and sometimes insulating axons with myelin to speed signal transmission. Astrocytes and oligodendrocytes are both examples of these supportive glial cells, with astrocytes helping maintain the chemical environment and blood–brain barrier, and oligodendrocytes forming myelin in the central nervous system. Neurons are the signaling cells, so the term that best describes the cells providing supporting functions for neurons is neuroglia.