Which of the following correctly matches a type of glial cell to one of its functions?

Question

BlackTom AI · Accepted Answer

To tackle this question, I will map each glial cell type to its well-established function and assess whether the given pair aligns.
Option 1: radial glia–guard against pathogens. While radial glia are crucial neural progenitors guiding migrating neurons during development, they are not primarily known for guarding against pathogens. The defense against pathogens is more associated with microglia and astrocytes in coordinating immune responses, so this pairing is inaccurate.
Option 2: astrocytes–participate in the formation of the blood-brain barrier. This is a correct association. Astrocytes contribute to the blood-brain barrier by their endfeet enveloping CNS vessels and signaling to endothelial cells to tighten junctions, thereby helping regulate the CNS environment. This option accurately links astrocytes to BBB formation.
Option 3: Schwann cells–form tracks along which newly formed neurons migrate. The description of forming migration tracks is characteristic of radial glia, not Schwann cells. Schwann cells primarily myelinate axons in the PNS and support nerve repair, so this statement misattributes their main function.
Option 4: oligodendrocytes–produce myelin sheaths in the peripheral nervous system (PNS). Oligodendrocytes actually myelinate axons in the CNS, not the PNS. In the PNS, the myelinating cells are Schwann cells, so this option contains the incorrect context about the nervous system where they operate.
Overall, only Option 2 presents a correct and specific functional match between the glial cell type and its role; the other options contain factual inaccuracies about the primary functions or the CNS/PNS distinctions.

Which of the following correctly matches a type of glial cell to one of its functions?单项选择题

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