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10 Cards in this Set
- Front
- Back
What are some examples of Protozoans? |
1. Amoeba |
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Amoeba
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• type of a Protozoan
Examples are: Entamoeba histolytica, Acanthamoeba spp., Balamuthia spp. |
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Entamoeba histolytica
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transmitted through ingestion of cysts in the feces.
• symptoms include severe dysentery with blood and mucus in the feces. |
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Acanthamoeba spp.
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free-living amoeba found in water |
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Balamuthia spp.
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free-living amoeba found in water
• can lead to encephalitis • probably enters via mucous membrane |
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Flagellates
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• type of Protozoan |
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Giardiasis
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• transmitted through ingestion of encysted forms in the feces
• Giardia lamblia - can cause severe and persistent diarrhea that can last for weeks |
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Trichomoniasis
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• sexually transmitted, a venereal disease
• Trichomonas vaginalis - can cause urinary and genital tract infections. This can cause irritation and itching and sometimes responsible for premature births |
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Hemoflagellates
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Trypanosomiasis
a. African Sleeping Sickness - transmitted by the tsetse fly • Trypanosoma gambiense • Trypanosoma rhodesiense • symptoms include decreased physical activity, decreased mental activity, coma and possibly death note: The trypanosomes will vary their surface antigens, thus making it difficult if not impossible to manufacture effective vaccines b. Chaga Disease - transmitted by the kissing bug -found mostly in South America • Trypanosoma cruzi - can cause loss of involuntary muscular contraction of the esophagus and stomach, can also cause heart damage. |
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Leishmaniasis
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transmitted by the sand fly |