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10 Cards in this Set
- Front
- Back
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Describe the term infectious disease. |
- Caused by micro-organisms - infected = presence of micro-organisms in the tissue
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What is the difference between the terms Pathogen and Virulence? |
Pathogen - Disease causing organism Virulence - effectiveness of the microorganism in causing disease |
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When is a disease contagious or infectious? |
When it can spread from one person to another
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An infestation is caused by what? |
Insects |
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LIst pathogen types in order of size. |
Prions - (is a protein) Bacteria - specific/non-specific Fungi Protozoa metazoan - worms, nits, scabies mite |
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The effects or extent of an infection depend on what? |
- Cell damage caused by the organism - further cell damage by host defence |
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Infections usually result in what body response? |
Acute inflammation followed by healing sometimes chronic inflammation may occur |
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List some local effects of acute inflammation in the oral cavity? |
Pus/abscess Cellulitis - ludwigs angina Mucous membrane infections Swelling (not all infection is a result of swelling) |
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LIst some systemic effects of acute inflammation. |
Fever Increased WBC count (leucocytosis) Lymph node enlargement Malaise Joint pains Nausea and vommiting |
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Why chronic inflammation occur? |
Decreased function of immune system Some microbial infections chronic from onset Granulation tissue + destruction of normal tissue resulting in function probs |
