Ch1pp9-12
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Questions and Answers

Where do B lymphocytes mature?

  • Spleen
  • Bone marrow (correct)
  • Thymus
  • Lymph nodes
  • What is the function of CD8+ T lymphocytes?

  • Help phagocytes destroy ingested microbes
  • Kill cells harboring microbes (correct)
  • Produce antibodies
  • Prevent or limit immune responses
  • What are the specialized peptide display molecules that bind to protein antigens recognized by T lymphocytes?

  • Antibodies
  • Cytokines
  • Complement proteins
  • Major histocompatibility complex (MHC) molecules (correct)
  • Where do mature lymphocytes encounter antigens and are activated?

    <p>Secondary (peripheral) lymphoid organs</p> Signup and view all the answers

    Which cells are broadly classified into myeloid cells and lymphoid cells?

    <p>Dendritic cells and mast cells</p> Signup and view all the answers

    What is the key characteristic of lymphocytes in adaptive immunity?

    <p>They produce clonally distributed receptors specific for diverse antigens</p> Signup and view all the answers

    How are different types of lymphocytes distinguished?

    <p>By the expression of surface molecules that can be identified using monoclonal antibodies</p> Signup and view all the answers

    What is the standard nomenclature for proteins used to delineate surface proteins that define a particular cell type or stage of cell differentiation?

    <p>$CD$ numeric designation</p> Signup and view all the answers

    Which class of lymphocytes is capable of producing antibodies and mediating humoral immunity?

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

    What is demonstrated through animal experiments with antigens X and Y?

    <p>Memory and specificity in immune response</p> Signup and view all the answers

    Which type of response to antigen X illustrates memory in the immune system?

    <p>Secondary response</p> Signup and view all the answers

    What do B cells express that recognize antigens and initiate cell activation?

    <p>Membrane-bound antibodies</p> Signup and view all the answers

    Which cells exhibit similar properties in response to antigens?

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

    What declines over time after each immunization, varying with type of antigen exposure?

    <p>Antibody levels</p> Signup and view all the answers

    What are the classes of lymphocytes in the adaptive immune system?

    <p>B lymphocytes, helper T cells, cytotoxic T lymphocytes, regulatory T cells</p> Signup and view all the answers

    What do soluble antigens and antigens on the surface of microbes bind to on B lymphocytes?

    <p>B lymphocyte antigen receptors</p> Signup and view all the answers

    Which class of lymphocytes mediates cellular immunity by recognizing and killing infected or abnormal host cells?

    <p>Cytotoxic T lymphocytes</p> Signup and view all the answers

    What is a key characteristic of the secondary response to an antigen?

    <p>It is faster and larger than the primary response</p> Signup and view all the answers

    Which class of lymphocytes suppresses or regulates other immune cells?

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

    Study Notes

    Adaptive Immune System: Lymphocyte Classes and Functions

    • Memory and specificity in immune response demonstrated through animal experiments with antigens X and Y
    • Antigens X and Y induce production of different antibodies, reflecting specificity
    • Secondary response to antigen X is faster and larger than the primary response, illustrating memory
    • Antibody levels decline over time after each immunization, varying with type of antigen exposure
    • B cells and T cells exhibit similar properties in response to antigens
    • Classes of lymphocytes in the adaptive immune system: B lymphocytes, helper T cells, cytotoxic T lymphocytes, and regulatory T cells
    • Functions and antigen recognition mechanisms for each class of lymphocytes
    • Detailed summary of alpha beta T lymphocytes and B lymphocytes
    • Percentage of total lymphocytes for different types of lymphocytes in blood, lymph nodes, and spleen
    • B lymphocytes are capable of producing antibodies and mediating humoral immunity
    • B cells express membrane-bound antibodies that recognize antigens and initiate cell activation
    • Soluble antigens and antigens on the surface of microbes and other cells can bind to B lymphocyte antigen receptors, leading to proliferation and differentiation of antigen-specific B cells

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    Description

    Test your knowledge of lymphocyte classes and functions in the adaptive immune system, including memory, specificity, and antigen recognition mechanisms. Explore the roles of B lymphocytes, helper T cells, cytotoxic T lymphocytes, and regulatory T cells.

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