Preventing entry of pathogens
- Created by: tumblrgirl96
- Created on: 04-05-15 18:06
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- Preventing entry of pathogens
- Skin
- Skin flora are harmless bacteria that will outcompete pathogens
- Skin's outer layer is made from keratin which is a hard protein - pathogens can't break through unless there's a cut
- Mucous Membranes
- Cilia carry mucus (and any trapped pathogens) to the trachea and bronchi which will be swallowed from the nose.
- Mouth. eyes and nose contain lysozyme which causes lysis in pathogens by breaks down the cell wall
- Digestive system
- Stomach acid
- gastric juice is highly acidic and kills most bacteria
- Gut flora
- Harmless bacteria that outcompetes pathogens
- Stomach acid
- Pathogens can enter the body through: cuts in the skin, contaminated food and drink entering the digestive system, respiratory system by being inhaled, mucosal surfaces such as nose and mouth
- Skin
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