Wound Healing and Tissue Repair Quiz
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Questions and Answers

Which type of cells regenerate throughout life?

  • Stable cells
  • Permanent cells
  • Mature cells
  • Labile cells (correct)
  • Which cells have the capacity to divide if stimulated by some initiating event?

  • Stable cells (correct)
  • Mature cells
  • Labile cells
  • Permanent cells
  • Which cells cannot replicate?

  • Mature cells
  • Permanent cells (correct)
  • Labile cells
  • Stable cells
  • Which stages generally constitute the majority of the time of the cell cycle?

    <p>G1 and S stages</p> Signup and view all the answers

    Which form of extracellular signaling occurs via soluble mediators acting on the same cell?

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

    Which cells have the highest regenerative capacity?

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

    Which cells replicate at a low level throughout life?

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

    Which cells are examples of permanent cells?

    <p>Neurons and cardiac muscle cells</p> Signup and view all the answers

    Which stage of the cell cycle is typically brief?

    <p>M (mitotic) stage</p> Signup and view all the answers

    Which form of extracellular signaling occurs between nerve cells?

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

    Which process involves the formation of new blood vessels?

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

    Which type of collagen is most common in skin, bone, tendons, and most organs?

    <p>Type I</p> Signup and view all the answers

    Which component of the extracellular matrix confers tissues the ability to recoil and return to a baseline structure after physical stress?

    <p>Elastin fibers</p> Signup and view all the answers

    All of these growth factors are responsible for mediating scar formation in tissue, EXCEPT ONE

    <p>Vascular epithelium growth factor (VEGF)</p> Signup and view all the answers

    What is the hallmark of healing in tissue repair?

    <p>Granulation tissue</p> Signup and view all the answers

    All of these growth factors induce angiogenesis in the process of wound healing, EXCEPT ONE

    <p>Platelet derived growth factor (PDGF)</p> Signup and view all the answers

    In which type of wound healing does the wound occur with clean wounds and little tissue damage?

    <p>Primary union or healing by first intention</p> Signup and view all the answers

    All of these factors retards wound healing due to a more intense inflammatory reaction and greater amount of granulation tissue. EXCEPT ONE:

    <p>High Blood supply</p> Signup and view all the answers

    Which vitamin deficiency is essential for collagen synthesis and can lead to scurvy and bleeding gums?

    <p>Vitamin C</p> Signup and view all the answers

    Which type of healing occurs in wounds with large tissue defects and when the skin edges are not in contact?

    <p>Second union or healing by second intention</p> Signup and view all the answers

    Which factor is a systemic factor that can retard wound healing?

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

    Wound contraction is mediated by what?

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

    Which type of tissue regeneration cannot completely reconstitute the original architecture and may result in wound contraction or larger residual scars?

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

    Cell growth and difeferentiation are dependent on what?

    <p>Extracellular signals derived from soluble mediators and extracelular matrix</p> Signup and view all the answers

    Extracellular signaling occur via soluble mediator in four different forms . Mention these forms

    Signup and view all the answers

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