Nerve Regeneration and Stem Cells Research
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Questions and Answers

In which part of the nervous system do oligodendrocytes and astrocytes inhibit axon regeneration?

  • Peripheral nerves
  • Muscles and glands
  • Brain (correct)
  • Spinal cord

    • Which type of cells form myelin sheaths around fibers in the brain and spinal cord?

  • Astrocytes
  • Schwann cells
  • Microglia
  • Oligodendrocytes (correct)

    • What is the main role of Schwann cells in the nervous system?

  • Inhibit axon regeneration in the central nervous system
  • Support neurons and engulf bacterial debris
  • Encircle long nerve fibers and form myelin sheaths outside the brain (correct)
  • Encircle long nerve fibers and form myelin sheaths in the brain

    • What type of stem cells are present in the spinal cord?

    <p>Spinal cord stem cells</p> Signup and view all the answers

    What do spinal cord-injured stem cells primarily become instead of neurons?

    <p>Glial cells</p> Signup and view all the answers

    What type of nerve cells did scientists at Johns Hopkins University cause embryonic stem cells to differentiate into?

    <p>Spinal cord motor neurons</p> Signup and view all the answers

    What significantly increased the success of transplanted neurons in paralyzed rats during later experiments?

    <p>Drugs to overcome inhibition from the central nervous system</p> Signup and view all the answers

    What was the outcome of the transplanted cells surviving for longer than a month within the spinal cord of rats with spinal cord injuries?

    <p>No improvement in symptoms was seen and no functional neuron connections were made.</p> Signup and view all the answers

    What is the main focus of the research mentioned in the text?

    <p>Using body's own stem cells within the central nervous system</p> Signup and view all the answers

    In which organs or structures can cuboidal epithelium be found based on the information provided?

    <p>Covering the ovaries</p> Signup and view all the answers

    What function does squamous epithelium serve based on the information provided?

    <p>Protection</p> Signup and view all the answers

    Which type of epithelial tissue is responsible for absorption in the body?

    <p>Columnar</p> Signup and view all the answers

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