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Cell eating any cells which do this are called..
phagocytes
Components of blood..
plasma is the fluid portion
formed elements cells and cell fragments
white blood cells,. changes detected by diffrential white blood cell count
leukocytes... granulocytes, monocytes, lymphocytes
Enlarged monocytes become ...
macrophages
Those that leave the blood and migrate are known as
wandering macrophages
located in certain tissues and organs are called
fixed macrophages
all together macrophages of the body constitue the
mononuclear phagocytic system
granulocytes/acute
macrophage/chronic
granulocytes dominate in the initial phase of a bacterial infection, but later macrophages become dominant as the infection progresses
inflammation
a defensive response triggered by damage to body tissues.. 4 symptoms redness, pain, heat, swelling
functions of inflammation
destroys infectious agent and remove it and its products form the body
limits the effects of agent by walling it off
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
histamine
released by injured cells
also a part of the complement system
kinins
present in blood plasma when active also plays a role in chemotaxis of phagocytic granuloytes
prostaglandins
released by damage cells
intensifies effects of histamines and kinins
helps phagocytes move through capillary walls
leukotrienes
produced by mast cells
increase permeabliity of blood vessals and help phagocytes attach to pathogens
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
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
opsonization
immune adherence binding of c3b to the microbe can interact with receptors on phagocytes
makes phagocytosis easier
hepatulism
measures the body temperature in body
crisis
a period of sweating indicates that the temperature is falling
complement system.. non specific
is a defensive system containing serum proteins that perticipate in lysis of foreign cells
Author
naturalgryl
ID
247992
Card Set
16
Description
Microbiology
Updated
11/20/2013, 5:03:26 AM
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