Causes of disease

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What is a pathogen?
A micro organism that causes disease
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What must a micro organism do to be considered a pathogen?
Gain entry to the host, Colonise the tissues of the host, Resist the defences of the host and Cause damage to the hosts tissue
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What is transmission?
When a pathogen is transferred from 1 person to another
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How do micro organisms get into the body?
Gas exchange system and Digestive system
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What natural defences prevent the entry of pathogens?
Mucus layer, Enzymes and Stomach acid
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Other cards in this set

Card 2

Front

What must a micro organism do to be considered a pathogen?

Back

Gain entry to the host, Colonise the tissues of the host, Resist the defences of the host and Cause damage to the hosts tissue

Card 3

Front

What is transmission?

Back

Preview of the front of card 3

Card 4

Front

How do micro organisms get into the body?

Back

Preview of the front of card 4

Card 5

Front

What natural defences prevent the entry of pathogens?

Back

Preview of the front of card 5

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