Which glial cell type myelinates the optic nerve?

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Prepare for the NBEO Ocular Anatomy Posterior Segment and Cranial Nerves Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Which glial cell type myelinates the optic nerve?

Explanation:
The optic nerve is part of the central nervous system, so its axons are myelinated by oligodendrocytes, which wrap myelin around multiple CNS axons. Schwann cells, by contrast, myelinate axons in the peripheral nervous system. Astrocytes provide support and help maintain the neural environment, while microglia act as immune cells and do not form myelin. This CNS location of the optic nerve explains why oligodendrocytes are responsible for its myelination.

The optic nerve is part of the central nervous system, so its axons are myelinated by oligodendrocytes, which wrap myelin around multiple CNS axons. Schwann cells, by contrast, myelinate axons in the peripheral nervous system. Astrocytes provide support and help maintain the neural environment, while microglia act as immune cells and do not form myelin. This CNS location of the optic nerve explains why oligodendrocytes are responsible for its myelination.

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