Exploring Axonal Regeneration
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Questions and Answers

Which of the following is a key factor that contributes to the struggle of axonal regeneration in the CNS?

  • Limited ability of oligodendrocytes to phagocytose myelin debris
  • Presence of the blood-brain barrier
  • Inhibitory molecules in myelin debris
  • All of the above (correct)

    • What is one reason why injured axons in the PNS have a remarkable capacity for rapid regeneration?

  • Inhibitory molecules in myelin debris
  • Presence of the blood-brain barrier
  • Efficient phagocytosis of myelin debris by oligodendrocytes (correct)
  • Limited entry of migrating macrophages

    • What is the primary reason for the delay in debris clearance in the CNS?

  • Presence of the blood-brain barrier
  • Limited entry of migrating macrophages
  • Limited ability of oligodendrocytes to phagocytose myelin debris (correct)
  • Inhibitory molecules in myelin debris

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