Organs and Cells of the Immune System Objectives Quiz
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Questions and Answers

What is the primary function of the thymus gland?

  • To produce antibodies
  • To store fat in the body
  • To generate and mature T cells (correct)
  • To produce red blood cells

    • Which type of bone marrow is the site of hematopoiesis and the origin of B cells in humans?

  • Trabecular bone
  • Yellow marrow
  • Cortical bone
  • Red marrow (correct)

    • What is the primary function of lymph nodes?

  • To sample antigens from the lymph and mount an immune response (correct)
  • To store fat
  • To produce red blood cells
  • To filter blood

    • Which structure within a lymph node is the site of intense B cell proliferation?

    <p>Germinal center</p> Signup and view all the answers

    What percentage of the total body mass in humans is typically occupied by bone marrow?

    <p>4%</p> Signup and view all the answers

    How does the thymus gland change in size as people age?

    <p>The thymus gland reaches its maximum size at puberty and then atrophies</p> Signup and view all the answers

    What is the function of eosinophils?

    <p>Ending allergic reactions</p> Signup and view all the answers

    Which leukocyte type is the rarest?

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

    What is the function of neutrophils?

    <p>Phagocytosis of bacteria</p> Signup and view all the answers

    Which leukocyte type has pink granules in its cytoplasm?

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

    What is the artificial division of leukocytes into granulocytes and agranulocytes based on?

    <p>Presence of granules in the cytoplasm</p> Signup and view all the answers

    Which leukocyte type has a role in fighting parasitic infections?

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

    Which of the following is NOT a part of the lymph node structure?

    <p>Marginal zone</p> Signup and view all the answers

    Which of the following statements about the spleen is correct?

    <p>Blood enters the spleen through sinusoids.</p> Signup and view all the answers

    Which of the following is NOT a function of cutaneous and mucosal lymphoid organs?

    <p>Responsible for the production of red blood cells</p> Signup and view all the answers

    Which of the following is the correct order of structures in a lymph node, from outermost to innermost?

    <p>Capsule, trabecula, medullary cords, follicles</p> Signup and view all the answers

    What is the function of the marginal zone in the spleen?

    <p>To trap and concentrate blood-borne antigens</p> Signup and view all the answers

    Which of the following is NOT a primary lymphoid organ?

    <p>Lymph nodes</p> Signup and view all the answers

    What is the primary function of lymph nodes?

    <p>Collecting antigens from tissues</p> Signup and view all the answers

    Which of the following is NOT an innate immune cell?

    <p>T cell</p> Signup and view all the answers

    What is the primary function of the spleen?

    <p>Collecting antigens from the bloodstream</p> Signup and view all the answers

    Which of the following is a mucosal immune system component?

    <p>Peyer's patches</p> Signup and view all the answers

    What is the primary function of the thymus?

    <p>Development of T cells</p> Signup and view all the answers

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