Chapter 4: Cells of the Innate Immune System Quiz
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Questions and Answers

What is the primary function of lymphocytes in the innate immune system?

  • To migrate into tissues and act as macrophages
  • To kill abnormal host cells that are infected or malignant (correct)
  • To phagocytose and degrade foreign cells and particles
  • To synthesize immunoglobulins and antibodies

Which type of leukocyte is characterized by the presence of granules in its cytoplasm?

  • Granulocytes (correct)
  • Lymphoid cells
  • Agranular leukocytes
  • Monocytic cells

What is the primary function of dendritic cells in the innate immune system?

  • To sample extracellular fluids by macropinocytosis (correct)
  • To phagocytose and degrade foreign cells and particles
  • To migrate into tissues and act as macrophages
  • To synthesize immunoglobulins and antibodies

What is the main difference between monocytes and macrophages?

<p>Monocytes are found in the circulation, while macrophages reside in tissues (C)</p> Signup and view all the answers

Which type of lymphocyte is responsible for the production of antibodies?

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

Why are dendritic cells not typically observed in peripheral blood smears?

<p>Dendritic cells are only found in specific tissues, not in the peripheral blood (C)</p> Signup and view all the answers

What is the common origin of all types of leukocytes in the innate immune system?

<p>They all arise from a common pluripotent stem cell in the bone marrow (B)</p> Signup and view all the answers

Which type of white blood cells have multilobed nuclei and cytoplasmic granules?

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

What percentage of total white blood cells do neutrophils typically constitute?

<p>60% (B)</p> Signup and view all the answers

Which type of white blood cells have dark purplish black granules containing histamine?

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

What is the primary function of eosinophils?

<p>Responding to parasitic infections (C)</p> Signup and view all the answers

Which white blood cells are effective at killing bacteria and increase significantly in acute infections?

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

How do basophils differ from eosinophils?

<p>Basophils release histamine, eosinophils respond to parasitic infections. (B)</p> Signup and view all the answers

In what type of infection are eosinophils particularly important?

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

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