First line of defence Flashcards
1
Q
Physical barriers - - - -
A
- intact skin
- cilia (little hairs on the throat)
- Waxy cuticle epidermal cells (like intact skin for plants)
- galls (cavities that form around pathogens on plants
2
Q
Chemical barriers - - - -
A
- sebum (oil on skin)
- stomach acid
- lysozyme in tears and saliva
- chemical in plants that kill pathogens
3
Q
Biological barriers
A
-natural flora (bacteria in intestines and on skin)
