Human Defence Flashcards by grace Stevenson

How do pathogens get into our body ?

Air born droplets
Open cuts
Direct contact
Food

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What are three of the barriers that stop pathogens from entering the body ?

Skin 
Eyelashes 
Medication 
Plasters 
Enzymes 
Nose hairs 
Acid 
Mucus 
Bacteriostatic substances 
Blood clots

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What two processes take over if pathogens over come the barriers ?

Phagocytosis

White blood cells

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