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19 Cards in this Set
- Front
- Back
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Epithelial |
A cell which forms a physical barrier in the skin |
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What does Histamine do? |
Causes blood vessels to widen when increases the blood flow to the infected area |
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Phagocyte |
Engulfs harmful cells and multiply very fast |
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Nk cells |
Signal goes through membrane to active cell killing protein and causes the target to kill itself |
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Non-specific line of defence |
Skin, mucous membrane, lysozyme in tears and saliva, acid in stomach |
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Mast cell |
A cell found throughout connective tissue. |
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What does a mast cell produced |
Histamine |
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Cytokine |
A cell signalling protein molecule |
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What do cytokines do? |
They attract phagocyte to the site of infection in Non-specific immunity, they are also involved in the specific immunity where they activate lymphocytes |
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Antigen |
A molecule recognised by the body as non-self and foreign |
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Auto immune disease |
Rheumatoid arthritis, type 1 diabetes, multiple sclerosis |
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Cytotoxic T-lymphocyte |
Recognise antigens on infected cell, bind to the antigen and triggers apoptoisis |
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Sporadic disease |
A disease occasionally, singaly or in scattered instances- no connection between them |
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Endemic disease |
Persistent, low level, regular number of cases in particular area |
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Epidemic disease |
When a disease incidence suddenly increases affects large number of people in a particular area |
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Pandemic disease |
Epidemic over a large area, across continents or throughout the world |
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Apoptosis |
Stimulation of a cell to self-destruct and programmed cell death |
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Vector |
Carrier of pathogen that can bite another organism to transmit the pathogen |
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What do epidemiologists study? |
Location, pattern, speed and distribution of disease |
