Lymph Sys & Immunity

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Author:
josey067
ID:
311008
Filename:
Lymph Sys & Immunity
Updated:
2015-11-06 01:20:55
Tags:
Haley anatomy lymphatic lymph
Folders:
biology,anatomy
Description:
Lymph Sys & Immunity
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  1. Interferon alpha
    It attracts and stimulates NK cells, and enhances resistance to viral infection.
  2. Interferon beta
    It slows inflammation in a damaged area.
  3. Interferon gamma
    It stimulates macrophage activity.
  4. Properdin
    It is a complement protein that initiates the alternative pathway when it interacts with other complement proteins in the plasma.
  5. Histamine
    It increases the degree of local inflammation and accelerates blood flow to the region.
  6. Passive immunity
    Produced by the transfer of antibodies from another source
  7. Active immunity
    Develops in response to antigen exposure
  8. Specificity
    Each T cell or B cell has receptors that bind to one specific antigen, but ignore all others
  9. Versatility
    Results from the large diversity of lymphocytes present in the body; there are millions of different lymphocyte populations, each sensitive to a different antigen
  10. Immunologic memory
    Exists because cell divisions of activated lymphocytes produce two groups of cells: one that attacks the pathogen immediately, and another that remains inactive unless it is exposed to the same antigen at a later date
  11. Tolerance
    Exists because the immune response ignores normal (“self”) tissues but targets abnormal and foreign cells (“nonself”) as well as toxins
  12. Costimulation
    A vital secondary binding process that confirms the activation signal
  13. Apoptosis
    Self-destruction process of the cell, which results from the activation of genes within the target cell nucleus
  14. Lymphotoxin
    Secreted compound that disrupts cell metabolism
  15. Neutralization
    Antibodies bind at superficial sites on the bacteria or toxins, making the virus or toxin incapable of attaching itself to a cell
  16. Agglutination
    The formation of immune complexes when the target antigen is on the surface of a cell or a virus
  17. Prevention of pathogen adhesion
    Antibodies dissolved in saliva, mucus, tears, and perspiration coat epithelia
  18. Stimulation of inflammation
    Stimulated release of chemicals from basophils and mast cells
  19. Attraction of phagocytes
    Antigens covered with antibodies attract eosinophils, neutrophils, and macrophages.
  20. Circulating proteins called __________ can reset the temperature thermostat in the hypothalamus and raise body temperature.
    pyrogens
  21. __________-presenting cells are specialized cells that include all the phagocytic cells of the monocyte-macrophage group and the dendritic cells of the skin and lymphoid organs.
    Antigen
  22. Which type of acquired immunity develops after a vaccination?
    artificially induced active immunity
  23. Which substance is produced by cells infected with viruses and enhances resistance to viral infection?
    interferon alpha

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