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 (C)</p> Signup and view all the answers

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

<p>Autocrine (B)</p> Signup and view all the answers

Which cells have the highest regenerative capacity?

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

Which cells replicate at a low level throughout life?

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

Which cells are examples of permanent cells?

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

Which stage of the cell cycle is typically brief?

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

Which form of extracellular signaling occurs between nerve cells?

<p>Synaptic (B)</p> Signup and view all the answers

Which process involves the formation of new blood vessels?

<p>Angiogenesis (D)</p> Signup and view all the answers

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

<p>Type I (C)</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 (D)</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) (C)</p> Signup and view all the answers

What is the hallmark of healing in tissue repair?

<p>Granulation tissue (D)</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) (D)</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 (B)</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 (D)</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 (D)</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 (B)</p> Signup and view all the answers

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

<p>Diabetes (B)</p> Signup and view all the answers

Wound contraction is mediated by what?

<p>Myofibroblasts (C)</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 (B)</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 (A)</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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