Unit 1 pathogens biology

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What are infectious diseases caused by?
Pathogens such as bacteria, viruses, and fungi.
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What are non infectious diseases caused by?
The body malfunctioning.
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Examples of infectious diseases?
Comon cold, chest infection food poisening
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Examples of non infectious diseases
Cancer, heart disease and diabetes.
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Life style factors are?
Factors on the way you live, that can contribute to your risk of getting a disease.
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what are the lifestyle factors that increase your chance of coronary heart disease?
smoking, lack of exercise, poor diet, excessive alcohol intake
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what are the lifestyle factors that increase your chance of cancer?
Smoking, excessive exposure to sunlight, excessive alcohol intake.
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How do pathogens enter the body?
they enter an organisms surface of contact with the environment.
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How do pathogens cause disease?
They damage the cells of the host, by rapturing them to release their nutrience, break down their nutrience inside the cell, or replicate inside the cells, bursting them
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What do pathogens release into the body?
Harmful toxins.
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How do pathogens enter through the gas exchange system?
most are trapped in the lining of mucus, then are removed by the cilia that beat the mucus up the trachea, and removed, but some pathogens are still able to reach the alveolar, where they can enter the cells and cause damage.
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How do pathogens enter through the skin?
Damaging the skin means they can enter into the blood stream, platelets clot the blood to prevent this, however some might get in before the scab forms
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How do pathogens enter the digestive system?
Eating or drinking them means they normally killed by the acidic conditions in the stomache, however some may survive and pass into the intestine, where they can invade the cells of the gut wall and cause disease.
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Other cards in this set

Card 2

Front

What are non infectious diseases caused by?

Back

The body malfunctioning.

Card 3

Front

Examples of infectious diseases?

Back

Preview of the front of card 3

Card 4

Front

Examples of non infectious diseases

Back

Preview of the front of card 4

Card 5

Front

Life style factors are?

Back

Preview of the front of card 5
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