原虫 Protozoa
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佚名
<big> <big> <strong>Medical Protozoa</strong> </big> </big>
一、Protozoa: unicellular animals; Microscopic in size; have all necessary life activities.
二、Taxonomy
Kingdom: Protista>Subkingdom:Protozoa
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<small>Phylum:</small>
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<small>Class</small>
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<small>Genera:</small>
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<small>Sarcomastigophora</small>
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<small>Zoomastigophora</small>
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<small>Trypanosoma, Leishmania, Giardia, Trichomonas</small>
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<small>Lobosea</small>
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<small>Entamoeba, Naegleria, Acanthamoeba</small>
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<small>Apicomplexa</small>
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<small>Sporozoea</small>
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<small>Plasmodium, Toxoplasma, Cryptosporidium, Isospora</small>
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<small>Ciliophora</small>
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<small>Kinetofragminophorea</small>
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<small>Balantidium</small>
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三、Basic structure 1 Cell membrane 2 Cytoplasm organelles: pseudopodium(-dia-amoeba); flagellum(-lla-flagellate); cilium(cilia-ciliate) 3 Nucleus: two kinds of nuclei: vesicular; compact
四、Characteristics of Pathogenesis 1 proliferation 2 Diffusion (disperse ) 3 Opportunistic parasitosis
五、Ecological Niches in the Human Body:
- Skin: Leishmania
- Eye: Acanthamoeba
- Mouth: Amoebae and flagellates (usually non-pathogenic)
- Gut: Giardia, Entamoeba (and invasion to liver), Cryptosporidium, Isospora, Balantidium
- G.U. tract: Trichomonas
- Bloodstream: Plasmodium, Trypanosoma
- Spleen: Leishmania
- Liver: Leishmania, Entamoeba
- Muscle: Trypanosoma cruzi
- CNS: Trypanosoma, Naegleria, Toxoplasma, Plasmodium
