Neutrophils -lecture

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Questions and Answers

What percentage of WBC in blood do polymorphonuclear leukocytes make up?

  • 80%
  • 60%
  • 70% (correct)
  • 50%

Which type of leukocytes are the first cells to arrive at a site of inflammation?

  • Eosinophils
  • Basophils
  • Lymphocytes
  • Neutrophils (correct)

What do neutrophils contain in their granules?

  • Digestive enzymes
  • Bactericidal proteins (correct)
  • Histamine
  • Cytokines

What do neutrophils mainly attack?

<p>Antibody-labeled bacteria (C)</p> Signup and view all the answers

What is the lifespan of neutrophils?

<p>1 day (B)</p> Signup and view all the answers

What can the formation of pus caused by killed bacteria and neutrophils lead to?

<p>Damage to healthy tissue (C)</p> Signup and view all the answers

What do neutrophils secrete that recruit more immune cells?

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

What condition occurs during acute bacterial infections?

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

What is the cause of neutrophilia?

<p>Increased mobilization and production of G-CSF (B)</p> Signup and view all the answers

What is the function of neutrophils in attacking bacteria?

<p>To secrete toxic chemicals (B)</p> Signup and view all the answers

What is the size of polymorphonuclear leukocytes?

<p>12µm (B)</p> Signup and view all the answers

Which type of leukocytes contain histamine in their granules?

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

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Study Notes

  1. Polymorphonuclear leukocytes are 12µm and make up 70% of WBC in blood.
  2. Neutrophils contain granules with bactericidal proteins.
  3. Neutrophils are the first cells to arrive at a site of inflammation.
  4. Neutrophils attack bacteria and secrete toxic chemicals.
  5. Neutrophils have a short lifespan of approximately 1 day.
  6. Killed bacteria and neutrophils form pus which can cause damage to healthy tissue.
  7. Neutrophils secrete inflammatory mediators that recruit more immune cells.
  8. Neutrophilia occurs during acute bacterial infections.
  9. Neutrophilia is due to increased mobilization and production of G-CSF.
  10. Neutrophils mainly attack antibody-labeled bacteria.

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