Lymphtic system chap 21

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hughes7
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Lymphtic system chap 21
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2014-10-08 16:34:11
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  1. First line of defense.
    Intact skin and mucous membranes
  2. Second line of defense
    Inflammatory response
  3. Third line of defense
    Immune response
  4. Innate defense system.
    Inflammatory response and skin and mucous membranes
  5. Adaptive defense system
    Immune response
  6. Small proteins secreted by virus‐containing cells.
    A)  Interferon
  7. Major innate mechanism that mediates destruction of foreign substances in the body.
    B)  Complement
  8. Stimulate the proliferation of other lymphocytes.
    C)  Helper T cells
  9. Dampen the activity of both T cells and B cells
    Regulatory T cells
  10. Present the double activation signal to T cells.
    APC's
  11. Main antibody of both primary and secondary immune response.
    A)  IgG
  12. Protects mucosal barriers.
    IgA
  13. Involved in allergies
    IgE
  14. Along with IgM, this is a B cell receptor.
    IgD
  15. Activates complement.
    IgM
  16. A graft from a monkey to a human is an example of an allograft. TF
    FALSE
  17. The mechanism of the "lethal hit" of cytotoxic T cells and NK cells involves a protein called perforin. TF
    TRUE
  18. Cellular ingestion and destruction of particulate matter is called phagocytosis   TF
    TRUE
  19. The respiratory burst produced by some macrophages releases free radicals.   TF
    TRUE
  20. The directional movement of cells in response to chemicals is called chemotaxis  TF
    TRUE
  21. Substances capable of triggering the adaptive immune system and provoking an immune response are called antigens   TF
    TRUE
  22. Soluble proteins secreted by plasma cells are called antibodies. TF
    TRUE
  23. A given pathogen will provoke either a cell‐mediated response or an antibody‐mediated response but not both TF
    FALSE
  24. Fever is seldom beneficial because it speeds up the cellular metabolic rate and will not allow antigen‐antibody reactions to occur. TF
    FALSE
  25. Monoclonal antibodies can be specific for several antigenic determinants
    FALSE
  26. Both T cells and B cells must accomplish double recognition:  They must simultaneously recognize self and nonself to be activated.
    FALSE
  27. Some immunocompetent cells will never be called to service in our lifetime  TF
    TRUE
  28. Anaphylactic shock can result from an immediate hypersensitivity where the allergen enters the blood.  TF
    TRUE
  29. Adaptive immunity is provided only by lymphocytes that secrete antibodies.
    FALSE
  30. A transfusion reaction is a subacute hypersensitivity to foreign red blood cells TF
    TRUE
  31. Somatic recombination by B cells allows each B cell to form its own unique antibody genes. TF
    TRUE
  32. Antigens can be complete or incomplete TF
    TRUE
  33. It is our genes, not antigens, that determine what specific foreign  substances our immune system will be able to recognize and resist.  TF
    TRUE
  34. Which of the following is characteristic of antibodies?
    A)  three binding sites per antibody monomer
    B)  carbohydrate structure
    C)  incapable of being transferred from one person to another
    D)  composed of heavy and light polypeptide chains 0
    D)  composed of heavy and light polypeptide chains 0
    (this multiple choice question has been scrambled)
  35. Which of the following is associated with passive immunity?
    A)  booster shot of vaccine
    B)  exposure to an antigen
    C)  passage of IgG antibodies from a pregnant mother to her fetus
    D)  infusion of weakened viruses
    C)  passage of IgG antibodies from a pregnant mother to her fetus
    (this multiple choice question has been scrambled)
  36. Which of the following is not a type of T cell?  
    A)  regulatory
    B)  cytotoxic 
    C)  helper 
    D)  antigenic
    D)  antigenic
    (this multiple choice question has been scrambled)
  37. B lymphocytes develop immunocompetence in the
    A)  lymph nodes 
    B)  bone marrow
    C)  spleen 
    D)  thymus
    B)  bone marrow
    (this multiple choice question has been scrambled)
  38. Which of the following is not a function of the inflammatory response?
    A)  prevents the spread of the injurious agent to nearby tissue
    B)  sets the stage for repair processes
    C)  replaces injured tissues with connective tissue
    D)  disposes of cellular debris and pathogens
    C)  replaces injured tissues with connective tissue
    (this multiple choice question has been scrambled)
  39. The redness and heat of an inflamed area are due to a local hyperemia caused by ________.
    A)  vasoconstriction
    B)  phagocyte mobilization
    C)  production of complement and interferon
    D)  vasodilation
    D)  vasodilation
    (this multiple choice question has been scrambled)
  40. The antibody molecule is held together by ________ bonds.
    A)  hydrogen 
    B)  sodium 
    C)  disulfide
    D)  amino acid
    C)  disulfide
    (this multiple choice question has been scrambled)
  41. In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned?
    A)  antigen
    B)  complement 
    C)  interferon 
    D)  antibody
    A)  antigen
    (this multiple choice question has been scrambled)
  42. Which of the following statements regarding NK cells is a false or incorrect statement? 
    A)  NK cells are a type of neutrophil.
    B)  NK cells attack cells that display abnormal MHC antigens.
    C)  NK cells are present in the blood, spleen, lymph nodes, and red bone marrow.
    D)  NK cells attack cancer cells and virus‐infected body cells.
    A)  NK cells are a type of neutrophil.
    (this multiple choice question has been scrambled)
  43. The process whereby neutrophils and other white blood cells are attracted to an inflammatory site is called

    A)  diapedesis 
    B)  chemotaxis 
    C)  margination
    D)  phagocytosis
    B)  chemotaxis
    (this multiple choice question has been scrambled)
  44. Small molecules that bind with self‐proteins to produce antigenic substances are called
    A)  antibodies
    B)  reagins
    C)  ions 
    D)  haptens 
    D)  haptens
    (this multiple choice question has been scrambled)
  45. Which of the following is the correct sequence of events in phagocytosis?
    A)  chemotaxis, ingestion, digestion, adherence, killing
    B)  ingestion, adherence, chemotaxis, digestion, killing
    C)  chemotaxis, adherence, ingestion, digestion, killing
    D)  adherence, digestion, killing, ingestion, chemotaxis
    C)  chemotaxis, adherence, ingestion, digestion, killing
    (this multiple choice question has been scrambled)

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