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30 Cards in this Set
- Front
- Back
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Malaria is spread by what microb?
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parasitic protozoa, apicomplexa, plasmodium spp.
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After blood meal, what are the 9 stages of life cycle of Plasmodium.
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1)Sporozoites in saliva
2) sporozoites become merozoites in liver 3) merozoites become trophozoits that penetrate erythrocytes. 4) trophozoits enter schizogony produce more merozoites; most merozoites infect more erythrocytes...some become male and female gametocytes 5) female gametocytes injested by another mosquito. 6) gametocytes freed from erythrocytes in digestive trace; become gametes. Male gametes fertilize female gametes; produce zygote 7) zygote differentiates into an ookinete; penetrates gut wall of mosquit becomes oocyst 8) 10-20 days later, oocyst ruptures releasing sporozoites to salivary glands. 9) cycles starts again. |
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Plasmodium spp. spreads what disease, what part of the world, mode of transmission, host organisms.
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Malaria
tropics, subtropics Anopheles mosquitos Humans |
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Classification of Animal Parasites
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Helminths
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Helminths are broke down to two subcategories...
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Platyhelminths and Nematodes
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Tapeworms are in what categories.
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Animal Parasites, Helminths, Platyhelminths, cestodes.
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Helminths, Platyhelminths are broke down to which subcategories
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Cestodes and Trematodes
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Tapeworms are part of what.
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Animal Parasites, Helminths, Platyhelminths Cestodes
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Flukes are part of what?
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Animal Parasites, Helminths, Platyhelminths, Trematodes
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Roundwormds are in what categories?
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Animal Parasites, Helminths, Nematodes.
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Example of Cestode that we studied, and what it's commonly known as?
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Taenia Saginata; beef tapeworm.
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Common name for Beef Tapeworm?
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Taenia Saginata
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Taenia Saginata graphical distrubtion of?, mode of transmission, and length of adult worms?
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Worldwide /c local endemic areas, consumption of undercooked meat, and from 5 to 25 m. (15 to 75 feet)
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Example of Trematodes that we studied?
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Schistosoma Japonicum
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Schistosoma japonicum primar infection or disease, graphical distrubtion of? mode of tranmission, and length of adult worms?
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Schistosomiasis, fresh (contaminated) water, Asian/Africa, direct penetration of the skin, 7-20 mm.
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Taenia Saginata
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Beef Tapeworm
transmitted via consumption of undercooked meat s/s; usually mild nausea, diarrhea, abd. pain, and head. |
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Scolex
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small attachment organ that possesses suckers and/or hooks used to attach the worm to host tissues; taenia saginata
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Proglottids
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body segments behind scolex of Cestodes. Proglottids are not self fertilizing, however a tapeworm may be self fertile.
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Gravid
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full of fertilized eggs. Proglottids near or at the end of the chain of a tapeworm/cestode
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Entamoeba histolytica
amoebic dysentera (amebiasis) infection occures host ingests cysts fecal/oral contamination areas with poor sanitation cysts able to withstand acidic environment of the stomach - |
who:
what: when: how: where: why: |
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DEFINITIVE HOST
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the host in which the sexual reproduction of a parasite takes place
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INTERMEDIATE HOST
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The host occupied by juvenile stages of a parasite prior to the definitive host and in which asexual reproduction often occurs.
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4 types of PROTOZOANS
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sarcodines, mastigophorans, ciliates apicomplexa
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SARCODINES are known as?
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pseudopods: amoebae
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MASTIGOPHORANS are known as?
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flagellates
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CILIATES are known for which mode of locamotion?
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Cilia
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APICOMPLEXA are known for which disease and which form of locamotion?
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milaria and they ungulate
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Which sarcodine did we study, what disease does it cause, how is it contaminate, and in what form/stage does it contaminate its host?
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Entamoeba histolytica; amebic dysentery, fecal/oral contamination, contaminates as a cyst.
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Which mastigophoran did we study, what disease does it cause, how does it contaminate, and in what form/stage does it contaminate its host?
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Giardia intestinalis, giardiasis - more common water-bourne GI disease (dysentery),fecal/oral contaimination, contaiminates as cysts.
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Which ciliate did we study, what disease does it cause, how does it contaminate, and in what form/stage does it contaminate its host?
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Balantidium coli, balantidiasis (dysentery), fecal/oral, contaimination via cysts.
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