6.2-6.4 Flashcards
what happens in the inflammatory response?
fluid and white blood cells leak from blood vessels to fight pathogens
what happens in immune respond?
immune cells in blood react to each kind of pathogen with a defense targeted to it
what are lymphocytes?
white blood cells that distinguish pathogen types
describe T cell B cell process
check p185
how to get active immunity, how long does it last?
vaccination, already got it. Last for long time, many years to whole life
what’s the span of HIV, how does it spread
it can take many years until ppl realize, virus enter T cell, reproduce, ppl infected with HIV have virus in their cells living for many years.
what’s AIDs
disease in which you get diseases healthy ppl don’t usually get, immune system fails, die.
how to prevent HIV?
drugs increase life expectancy: interfere with multiplication, block entrance of HIV
what’s active immunity
body produce own antibodies against pathogen, B cells bind to antigen before, memorizes it, so if the pathogen invades again, the B cell can recognize and fight it off very fast
Vaccination define
harmless antigen is put into body to trigger active immunity
vaccine define
a dose of weakened pathogens that trigger immune system. T cell B cell recognize the pathogen, kill it, memorizes it.
define antibiotic
chemical that kills bacteria and slows its growth
what is pasteurization?
killing bacteria by heating them up
how do antibodies destroy pathogens.
- mark them for destruction
2.make pathogens clump together - prevent them from infecting cells
4.makes it easier for phagocytes to eat them
why antibiotic don’t work on virus
antibiotic attack cell wall, virus are not cells
