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Intro to Inf Disease

Intro to Infectious Disease Review

QuestionAnswer
What are the 3 forms of microorganisms? bacteria, fungi, viruses
What do you call microorganisms that cause disease? pathogens
What do bacteria produce to harm cells? toxins
What do viruses do to cells to kill them? hijack the cell DNA and make copies of themselves
What body cells fight pathogens? white blood cells
What three mechanisms can WBCs use to fight pathogens? 1) ingestion 2) produce antibodies 3) produce anti-toxins
In what process do white blood cells engulf a pathogen? ingestion also called phagocytosis
Once inside of a WBC, the engulfed pathogen is attacked by what substances? enzymes
On the surface of each bacterium are structures called __? antigens
WBCs create ___ to defend against antigen-bearing pathogens antibodies
What do the antibodies do to pathogens? antibodies connect to the antigens on the virus, making it impossible for the virus to reproduce.
What do antitoxins do? bind to toxins and neutralize them
When you are vaccinated against a virus, what is the important part of the vaccine? dead or dying pathogens
What is the purpose of injecting dead pathogens into the body? to show the immune system what the antigens on the pathogen look like, so the body can produce antibodies in case it ever sees the virus again
Why does vaccination require large numbers of the population to be vaccinated? having lots of people vaccinated prevents viruses from finding safe places to grow
What does MMR stand for? measles, mumps and rubella
Created by: russcrick
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