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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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In Central nervous system the myelin sheath is formed by:
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The correct answer is  Ans. A. OligodendrogliocytesApart from neurons, CNS also contains glial cells known as neuroglia. Number of glial cells is five times that of neurons Schwann cells found in peripheral nervous system are also glial cells. In the CNS there are three types of glia:MICROGLIA Scavenger cells which enter the CNS from blood vessels OLIGODENDROCYTES Involved in myelin formationASTROCYTES Produce substances that are trophic to neurons but their exact role is not known