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12 Cards in this Set
- Front
- Back
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Pathogen
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Organisms that cause disease.
(Bacteria, virus, fungi, or protists) |
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Immune System
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Fights diseases caused by pathogens.
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Pathogens can spread by...
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1. Person to person (direct contact)
2. Animal to person (animal bite) 3. Contaminated objects (indirect contact) 4. Pathogens from environment (example botulism) |
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Barriers that keep pathogens out...
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1. Skin
2. Breathing passages 3. Mouth and stomach |
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If pathogens do get in...
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Pathogens damage cells in your body. If this happens, the Inflammatory Response is triggered. If the pathogen is sever enough, it triggers the Immune Response.
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Inflammatory Response
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1. Phygocytes (WBC) are released to fight pathogen..
2. Area of infection may swell (become inflamed) 3. You may get a fever. |
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Immune Response
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1. Lymphocytes are released.
2. T-cells recognize the Pathogen's Antigen. 3. B-cells produce antibodies to destroy the pathogen. |
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Phygocytes
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Engulf pathogen, then break it down.
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Lymphocytes
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Lymphocytes can distinguish one pathogen from another. There are two types: T-cells and B-cells
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T-cells
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T-cells recognize what the pathogen's antigen looks like and tell B-cells.
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B-cells
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B-cells produce antibodies that fit the pathogen's antigen like a puzzle piece and destroy it.
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HIV/AIDS
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Human Immunodeficiency Virus
Acquired Immune Deficiency Syndrome HIV attacks your immune system. Leads to AIDS, but this takes time. The shape of the virus keeps changing so the body can't fight it off. |
