10-fighting diseases Flashcards
1
Q
what is a pathogen?
A
a disease causing organism
2
Q
mechanical barriers against pathogens
A
- blood clots
- hair in your nose
3
Q
chemical barriers against pathogens
A
- mucus secreted by goblet cells
- acid produced by stomach
4
Q
what is vaccination and how does it work
A
it produces a weakened version of the virus which activates an immune response, creating memory cells and an active immune response
5
Q
what is passive immunity
A
short term immunity against pathogens, gained from an external source
6
Q
how do babies gain passive immunity from their mothers
A
by receiving anti-bodies from the mother through the placenta
