Human defence Flashcards
(7 cards)
What are the human defences to pathogens getting in the body
-Trachea + bronchi
-Mucus + hair
-Stomach
-Skin
How does the trachea and bronchi stop pathogens getting in our body
Secretes mucus to trap pathogens
How does the mucus and hair in your nostril help stop pathogens getting in the body
Trap particles that could contain pathogens
How does the stomach help stop pathogens getting in the body
Creates stomach acid which kills the pathogens
How does the skin help stop pathogens getting in the body
Acts like a barrier and secretes antimicrobial substances which kills the pathogen
What are the plant defences against pathogens
-Waxy cuticle
-mimicry
-Drooping/curling leaves
-Antibacterial secretion
-Leaf fall/shedding
-Thorns
-Poisonous berries
How are pathogens spread
-water
-air
-direct contact
