The First Line of Defence (VCE SSCE Biology): Flashcards
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Innate immune system
Innate immune system
Immediate, non-specific protection against all pathogens
First line of defence
First line of defence
Barriers preventing pathogens from entering the body
Non-specific (immune response)
Non-specific (immune response)
Responds the same way to all pathogens
Plant barrier types
Plant barrier types
Physical and chemical barriers only
Animal barrier types
Animal barrier types
Physical, chemical, and microbiological barriers
Galls function in plants
Galls function in plants
Isolate pathogens within outgrowth, prevent spread to healthy tissue
Chitinases function
Chitinases function
Break down chitin in fungal cell walls
Mucous and cilia function
Mucous and cilia function
Trap pathogens and sweep them towards throat
Stomach acid pH and function
Stomach acid pH and function
pH 1.5-3.5; destroys most swallowed pathogens
Normal flora protection mechanism
Normal flora protection mechanism
Compete with pathogens for space and nutrients