16

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Author:
naturalgryl
ID:
247992
Filename:
16
Updated:
2013-11-20 00:03:26
Tags:
Non Specific Defenses
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Description:
Microbiology
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  1. Cell eating any cells which do this are called..
    phagocytes
  2. Components of blood..
    • plasma is the fluid portion
    • formed elements cells and cell fragments
  3. white blood cells,. changes detected by diffrential white blood cell count
    leukocytes... granulocytes, monocytes, lymphocytes
  4. Enlarged monocytes become ...
    macrophages
  5. Those that leave the blood and migrate are known as
    wandering macrophages
  6. located in certain tissues and organs are called
    fixed macrophages
  7. all together macrophages of the body constitue the
    mononuclear phagocytic system
  8. granulocytes/acute


    macrophage/chronic
    granulocytes dominate in the initial phase of a bacterial infection, but later macrophages become dominant as the infection progresses
  9. inflammation
    a defensive response triggered by damage to body tissues.. 4 symptoms redness, pain, heat, swelling
  10. functions of inflammation
    • destroys infectious agent and remove it and its products form the body
    • limits the effects of agent by walling it off
  11. Vasodiliation
    is the increase in diameter of blood vessels

    • increases blood flow to damaged areas
    • responsible for the redness and and heat associated with inflammation 
  12. histamine
    • released by injured cells
    • also a part of the complement system
  13. kinins
    present in blood plasma when active also plays a role in chemotaxis of phagocytic granuloytes
  14. prostaglandins
    • released by damage cells
    • intensifies effects of histamines and kinins
    • helps phagocytes move through capillary walls
  15. leukotrienes
    • produced by mast cells
    • increase permeabliity of blood vessals and help phagocytes attach to pathogens
  16. 4 main mechanisms of Phagocytosis
    adherence-attachment to surface of microbes
    chemotaxis- chemical attract of phag.to micro.
    ingestion-engulfment of pesudopods produces  phagosome

    digestion phagosome fuses with lysome to form a phagolysnome
  17. interferons

    are effective for only short times and do not affect viral multiplication in ells already infected
    • are proteins that are produced when a virsu is recognized.
    • they interfere in virsu multiplication
    • excreted by host cell stimulates the production antiviral proteins AVP's by neighboring cells
  18. opsonization
    • immune adherence binding of c3b to the microbe can interact with receptors on phagocytes
    • makes phagocytosis easier
  19. hepatulism
    measures the body temperature in body
  20. crisis
    a period of sweating indicates that the temperature is falling
  21. complement system.. non specific
    is a defensive system containing serum proteins that perticipate in lysis of foreign cells

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