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30 Cards in this Set

  • Front
  • Back
Malaria is spread by what microb?
parasitic protozoa, apicomplexa, plasmodium spp.
After blood meal, what are the 9 stages of life cycle of Plasmodium.
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.
Plasmodium spp. spreads what disease, what part of the world, mode of transmission, host organisms.
tropics, subtropics
Anopheles mosquitos
Classification of Animal Parasites
Helminths are broke down to two subcategories...
Platyhelminths and Nematodes
Tapeworms are in what categories.
Animal Parasites, Helminths, Platyhelminths, cestodes.
Helminths, Platyhelminths are broke down to which subcategories
Cestodes and Trematodes
Tapeworms are part of what.
Animal Parasites, Helminths, Platyhelminths Cestodes
Flukes are part of what?
Animal Parasites, Helminths, Platyhelminths, Trematodes
Roundwormds are in what categories?
Animal Parasites, Helminths, Nematodes.
Example of Cestode that we studied, and what it's commonly known as?
Taenia Saginata; beef tapeworm.
Common name for Beef Tapeworm?
Taenia Saginata
Taenia Saginata graphical distrubtion of?, mode of transmission, and length of adult worms?
Worldwide /c local endemic areas, consumption of undercooked meat, and from 5 to 25 m. (15 to 75 feet)
Example of Trematodes that we studied?
Schistosoma Japonicum
Schistosoma japonicum primar infection or disease, graphical distrubtion of? mode of tranmission, and length of adult worms?
Schistosomiasis, fresh (contaminated) water, Asian/Africa, direct penetration of the skin, 7-20 mm.
Taenia Saginata
Beef Tapeworm
transmitted via consumption of undercooked meat
s/s; usually mild nausea, diarrhea, abd. pain, and head.
small attachment organ that possesses suckers and/or hooks used to attach the worm to host tissues; taenia saginata
body segments behind scolex of Cestodes. Proglottids are not self fertilizing, however a tapeworm may be self fertile.
full of fertilized eggs. Proglottids near or at the end of the chain of a tapeworm/cestode
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 -
the host in which the sexual reproduction of a parasite takes place
The host occupied by juvenile stages of a parasite prior to the definitive host and in which asexual reproduction often occurs.
4 types of PROTOZOANS
sarcodines, mastigophorans, ciliates apicomplexa
SARCODINES are known as?
pseudopods: amoebae
MASTIGOPHORANS are known as?
CILIATES are known for which mode of locamotion?
APICOMPLEXA are known for which disease and which form of locamotion?
milaria and they ungulate
Which sarcodine did we study, what disease does it cause, how is it contaminate, and in what form/stage does it contaminate its host?
Entamoeba histolytica; amebic dysentery, fecal/oral contamination, contaminates as a cyst.
Which mastigophoran did we study, what disease does it cause, how does it contaminate, and in what form/stage does it contaminate its host?
Giardia intestinalis, giardiasis - more common water-bourne GI disease (dysentery),fecal/oral contaimination, contaiminates as cysts.
Which ciliate did we study, what disease does it cause, how does it contaminate, and in what form/stage does it contaminate its host?
Balantidium coli, balantidiasis (dysentery), fecal/oral, contaimination via cysts.