Adaptive Immunity and Cellular Immunity
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What is the primary function of cellular immunity?

  • Recognition of pathogen-associated molecular patterns by pattern recognition receptors
  • Production of antibodies to combat extracellular pathogens
  • Elimination of intracellular microbes through T cells and cytokines (correct)
  • Activation of the complement system to combat bacterial pathogens

    • What is the role of helper T cells in the adaptive immune response?

  • Recognition of antigen-presenting cells
  • Activation of B cells to produce antibodies (correct)
  • Production of antibodies against pathogens
  • Direct killing of infected cells

    • What is the key difference between humoral immunity and cellular immunity?

  • Humoral immunity involves the activation of T cells, while cellular immunity involves the activation of B cells
  • Humoral immunity involves the production of antibodies, while cellular immunity involves the activation of T cells (correct)
  • Humoral immunity is involved in the activation of the complement system, while cellular immunity is involved in the activation of phagocytic cells
  • Humoral immunity is involved in combating intracellular pathogens, while cellular immunity is involved in combating extracellular pathogens

    • What is the term for the ability of the adaptive immune system to remember specific pathogens and mount a more rapid and effective response upon subsequent exposure?

    <p>Immunological memory</p> Signup and view all the answers

    What is the primary function of cytotoxic T cells in the adaptive immune response?

    <p>Direct killing of infected cells</p> Signup and view all the answers

    What is the term for the initial exposure to a pathogen that stimulates an adaptive immune response?

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

    What is the primary function of MHC molecules on professional antigen-presenting cells?

    <p>To process and display antigens to naive T cells</p> Signup and view all the answers

    Which molecule on T cells binds to epitopes associated with MHC proteins on APCs?

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

    What is the consequence of lacking co-stimulation in T cell activation?

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

    Which stage of cellular immunity involves the shut down of immune response and formation of T memory cells?

    <p>Shut down of immune response and formation of T memory cells</p> Signup and view all the answers

    What is the primary function of adhesion molecules in T cell recognition and binding?

    <p>To strengthen the binding of T cells to APCs</p> Signup and view all the answers

    Which stage of cellular immunity involves the recognition and binding of antigens by T cells?

    <p>Recognition and binding</p> Signup and view all the answers

    What is the primary function of calcineurin in T cell activation?

    <p>To activate gene for IL-2 and its receptor</p> Signup and view all the answers

    What happens to T cells after 4-5 days of activation and Interleukins secretion?

    <p>They differentiate and expand to yield enough numbers of functional T cells</p> Signup and view all the answers

    What is the primary function of IL-2 in T cell activation?

    <p>To stimulate T cell proliferation and differentiation</p> Signup and view all the answers

    What is the role of immunological synapse in T cell activation?

    <p>It enhances T cell activation by facilitating antigen presentation</p> Signup and view all the answers

    What is the primary function of cytotoxic T cells?

    <p>To kill infected cells</p> Signup and view all the answers

    What is the role of memory T cells in the immune response?

    <p>They provide long-term protection against future infections</p> Signup and view all the answers

    Which type of T cells activates cells related to cell-mediated immunity, macrophages, and B cells?

    <p>TH1 cells</p> Signup and view all the answers

    What is the function of Granzymes in Cytotoxic T cells?

    <p>Degrading enzymes</p> Signup and view all the answers

    What is the role of Treg cells in the immune response?

    <p>Suppressing the immune response</p> Signup and view all the answers

    What is the function of Perforin in Cytotoxic T cells?

    <p>Creating pores in the target cell membrane</p> Signup and view all the answers

    What is the characteristic of Memory T cells?

    <p>They recognize the same antigen if it enters the body again</p> Signup and view all the answers

    What is the fate of antigen-activated T cells after the infection is cleared?

    <p>They undergo programmed cell death</p> Signup and view all the answers

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