Volume 3 Chapter 5

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amerelman
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48447
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Volume 3 Chapter 5
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2010-11-09 12:42:19
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Volume 3 Chapter 5
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  1. Allergic Reaction
    An exaggerated response by the immune system to a foreign substance
  2. Anaphylaxis
    An unusal or exaggerated allergic reaction. Anaphylaxis means the opposite of phylaxis or protection
  3. Hymenoptera
    Any of an order of highly specialized insects such as bees and wasps.
  4. Immune System
    Body system responsible for combatting infection
  5. Immune Response
    Complex of events within the body that works toward the destruction or inactivation of pathogens, abnormal cells or foreign molecules.
  6. Pathogen
    Disease production agen or invading substance
  7. Toxin
    Any posionous chemical secreted by bacteria or released following destruction of bacteria.
  8. Cellular Immunity
    Immunity resulting from a direct attack of a forein substance by specialized cells of the immune system.
  9. Humoral Immunity
    Immunity resulting from attack of invading substance by antibodies.
  10. Antibody
    Principal agent of a chemical attack of an invading substance.
  11. Immunoglobin (Ig)
    Alternative term for antibody.
  12. Antigen
    Any substance that is capable, under appropriate circumatances, of inducing an immune response.
  13. Primary Response
    Initial, generalized response to an antigen.
  14. Secondary Reponse
    Response by immune system that takes place if body is exposed to an antigen a second time. Antibodies are specific and nongeneralized.
  15. Natural Immunity
    Genetically predetermined immunity at birth. Innate immunity
  16. Naturally Acquired Immunity
    Immunity that begins the develop efter birth and is continually enhancedby exposure to new pathogens.
  17. Induced Active Immunity
    Immunity achieved through vaccination given to generate an immune response that results in development of specific antibodies for the injected antigen.
  18. Active Immunity
    Acquired immunity that occured following exposure to an antigen and results in production of antibodies specific for that antigen.
  19. Passive Immunity
    Acquired immunity that results from administration of antibodies either from mother to the infant across the placental barrier (natural passive immunity) or through vaccination (induced passive immunity)
  20. Sensitization
    Initial exposure of a person to an antigen resulting in an immune response
  21. Hypersensitivity
    An unexpected and exaggerated response to a particular antigen. Allergy
  22. Allergy
    Hypersensitive state acquired through exposure to an antigen.
  23. Delayed Hypersensitivity Reaction
    A hypersensitivity reaction that takes place after an elapse of some time following reexposure to an antigen. Usually less severe.
  24. Immediate Hypersensitivity Reaction
    A hypersensitivity reaction that occures swiftly following reexposure to an antigen. Immediate hypersensitivity reactions are usually more severe than delayed reactions. The swiftest and most severe of such reactions is anaphylaxis.
  25. Allergen
    A substance capable of inducing allergy of specific hypersensitivity. Allergens may be protein or nonprotein. Most are protein.
  26. Basophil
    Type of white blood cell that participates in allergic responses.
  27. Mast Cell
    Specialized cell of the immune system that contains chemical that assist in the immune response
  28. Histamine
    A product of mast cells and basophils that causes vasodilation, capillary permiability, bronchoconstiction, and contraction of the gut.
  29. Angioneurotic Edema
    Marked edema of skin that usally involves head, neck, face and upper airway. Common manifestation of anaphylaxis.
  30. Slow Reacting Substance of Anaphylaxis (SRS-A)
    Substance released by basophils and mast cells that causes spasm of the bronchiole smooth muscle, resulting in an asthma like attack and occasionally asphyxia.
  31. Urticaria (Hives)
    Raised areas, wheals, that occur on the skin associated with vasodilation due to histamine.

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