immune systme Flashcards
immune system function
protct body from harmful stuff
antigen
outside substance from body that is bad
antibody(makes antigens)
substance produced by body that makes bad outside substance active
non specific (innate)
protection from all bad germs, non dependant on exposure to antigens, 1st and 2nd line of defense
specific (adaptive)
protects from pathogens, led by lymphocytes of body, 3rd line of defense
first line of defense (non specific innate) physical
skin
first line of defense (non specific innate) chemical
mucous membrane
first line of defense (non specific innate) reflexes
sneezing
second line of defense (non specific innate)
1.acidic environment (stomach acid and defacation) 2.inflamation (wbc release swelling/edema) 3.immunoglobulins (protein-functions as antibody)
t cells
kill cells thru apoptosis (programed cell death)
b cells
produce antibodies to fight antigens
aquired immunity
u get immune as a result of exposure to invaders (passive, active, natural, artificial)
natural active
antibodies adapt in response to infection
aquired active
antibodies develop cos vaccine
natural passive
antibodies received from breast milk
aquired passive
antibodies from infection
eosinophils
release substances to attack invaders
platelet
blood cells that stop bleeding by forming clots
neutrophil
wbcs that are the 1st line of defense against infection or injury
macrophage
clean up dead and harmful things in body
monocyte
checks for problems in body, then become macrophage
NK cell
natural killer cells, see sus cells then attack them
dendritic cell
info sharing cell (nerve of immune system)
basophil cell
immune cells that release substances that fight bad things in body
