Leukocyte Migration and Recirculation Quiz
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Questions and Answers

Which type of leukocytes are mainly delivered from the circulation into tissue sites of infection or injury?

  • Basophils
  • Eosinophils
  • Lymphocytes
  • Neutrophils (correct)
  • What is the main function of leukocytes in tissue sites of infection or injury?

  • Recognizing antigens
  • Maturation in bone marrow
  • Clearing dead tissues (correct)
  • Differentiating into effector lymphocytes
  • Where do lymphocytes recognize antigens and differentiate into effector lymphocytes?

  • Circulation
  • Bone marrow
  • Thymus
  • Secondary lymphoid organs (correct)
  • What is the initial step of low-affinity adhesion of circulating leukocytes to endothelial cells?

    <p>Expression of selectins</p> Signup and view all the answers

    Where are selectins and their ligands expressed?

    <p>Endothelial cells</p> Signup and view all the answers

    Which type of leukocytes are delivered from their sites of maturation to secondary lymphoid organs?

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

    What is the main function of leukocytes in tissue sites of infection or injury?

    <p>All of the above</p> Signup and view all the answers

    What is the function of selectins in leukocyte recruitment into tissues?

    <p>Mediating an initial step of low-affinity adhesion</p> Signup and view all the answers

    Where do effector lymphocytes perform their protective functions?

    <p>Tissue sites of infection in any tissue</p> Signup and view all the answers

    What is the main function of myeloid lineage leukocytes in tissue sites of infection or injury?

    <p>Delivering leukocytes from the circulation into tissue sites of infection or injury</p> Signup and view all the answers

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