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10 Cards in this Set

  • Front
  • Back
list the functions of the three lines of defense
block, survey, recognize, and destroy invaders
what makes it clear to the immune system that a cell is pathogenic?
the PAMP - pathogen-associated molecular pattern
what receptor do leukocytes have?
PRR - pattern recognition receptor
what is the title for cells that are not a part of the body?
nonself
what percent of white blood cells are lymphocytes?
20-35
explain how fever is caused
fever is initiated when a circulating substance called pyrogen resets the hypothalamic thermostat; this causes the body to create heat
what is the name for when a chemical signals leukocytes to respond?
chemotaxis
what is the name for the method of locomotion which neutrophils sometimes use?
diapedesis
what do vasoactive mediators do?
vasodilation, increased permeability of capillaries, etc.
what do chemotactic mediators do?
cell migrate to site of damage, major phagocytosis