Lymphatic Nodules and Lymph Nodes Quiz
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Questions and Answers

Which lymphoid organ serves as the site for T lymphocytes maturation?

  • Bone marrow
  • Tonsil
  • Thymus (correct)
  • Spleen
  • What is the function of HEVs (high endothelial venules) in the lymphatic system?

  • Producing antibodies
  • Regulating blood cell production
  • Clearing pathogens from the bloodstream
  • Transporting lymphocytes into lymph nodes (correct)
  • What is the clinical significance of DiGeorge Syndrome in relation to the lymphatic system?

  • Decreased platelet count
  • Impaired maturation of B lymphocytes
  • Defective T lymphocyte development (correct)
  • Reduced production of red blood cells
  • Which structure is a part of MALT (mucosa-associated lymphoid tissue)?

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

    What is the primary function of stave cells in the spleen?

    <p>Filtration of blood</p> Signup and view all the answers

    Which cells are responsible for presenting thymic antigens to immature lymphocytes during positive selection?

    <p>Type II epithelioreticular cells</p> Signup and view all the answers

    What is the main function of Hassall's corpuscles in the thymus?

    <p>Production of T cell maturation hormones</p> Signup and view all the answers

    What is the primary reason for the absence of reticular fibers in the thymus?

    <p>To prevent the infiltration of blood-borne antigens</p> Signup and view all the answers

    Which type of epithelioreticular cells form Hassall's corpuscles in the thymus?

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

    What is the main purpose of the blood-thymus barrier?

    <p>To maintain a privileged area for T cell development</p> Signup and view all the answers

    Where do T lymphocytes migrate after leaving the high endothelial venule (HEV)?

    <p>Inner cortex</p> Signup and view all the answers

    What is the function of the splenic pulp's white pulp?

    <p>Designed to facilitate immune responses</p> Signup and view all the answers

    What appears due to the proliferation of B lymphocytes in the splenic pulp?

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

    What is the function of stave cells in the red pulp of the spleen?

    <p>Phagocytose old red blood cells</p> Signup and view all the answers

    Which model of blood circulation does the spleen follow based on experimental and morphologic evidences?

    <p>Open circulation</p> Signup and view all the answers

    Where are high endothelial venules (HEVs) mainly located?

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

    What is the function of the appendix?

    <p>The exact function is unclear</p> Signup and view all the answers

    Where are microfold (M) cells mainly found?

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

    Which structure contains the mantles zone rich in T lymphocytes?

    <p>Lymphatic nodules</p> Signup and view all the answers

    In which structure do lymphocytes circulate through high endothelial venules (HEVs)?

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

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