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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

247992

Card Set

Description

Microbiology

Updated

2013-11-20T05:03:26Z

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