Tropical Disease Biology

?
Causes amoebic dysentry?
Entamoeba histolytica
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1-8 nuclei, non pathogenic, irregular peripheral chromatin
Entamoeba coli
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Hole like nuceli
Endolimax nana
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Large central body with multiple small granules within the cytoplasm periphery
Blastocystis hominis
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Giardia lamblia
explosive diarrhoea without blood
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giardia lamblia
only seen in fresh stools
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fasciola hepatica intermediate host
lymnaeid snails
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fasciola hepatica
metacercariae encyst on aquatic vegetation and are ingested
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fasciola hepatica
infects bile ducts and gall bladder
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Asian liver fluke
opistorchis
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opistorchis intermediate hosts
bithynia freshwater snails then freshwater fish
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opistorchis transmitted by
eating undercooked fish
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Paragonimus westermanni intermiate hosts
freshwater snails potodoma and semisulcospira, crabs and crayfish
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Shistosoma mansoni
blood fluke found in faeces, intermediate host biomphalaria
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schistosoma haematobium
blood fluke found in urine, intermediate host bulinus
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Schistosoma japonicum
blood fluke found in faeces, intermediate host oncomelania
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Lateral spine blood fluke
schistosoma mansoni
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Taenia solium/saginata
causes cystercercosis in tissues, found in cities, proglottides released in faeces
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Tapeworm scolex has 4 suckers and hooks
Taenia solium
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Fish tapeworm? Intermediate hosts?
Diphyllobothrium latum, crustaceans that eat the coracidia which are then eaten by fish where plerocercoid develops in muscle
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Temperate city dwarf tapeworm
Hymenolepis nana
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Human hyatid disease is caused by _ and caught by _
Echinococcus granulosus, ingestion of dog faeces
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Eggs hatch in small intestine and larvae migrate through blood and lungs
Ascaris lumbricoides
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Ascaris lumbricoides eggs develop
from a reduction in temperture oxygen and moisture in soil
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Eggs laid on anal skin in the night quickly contain infective larvae
enterobius vermicularis
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Worms bore into the intestine and digest wall tissues, usually few symptoms
trichuris trichiura
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hookworms have a _ buccal cavity than strongyloides
longer
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first stage rhabditiform larvae become infectious in
1 week
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Ascaris lumbricoides eggs take _ days to mature when passed out in faeces
20-40
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Hook worm is found in
tropics and subtropics
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found in freshly passed faeces
strongyloides stercoralis
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Nuceli do not extend to the tip of the sheathed larvae
wuchereria bancrofti
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larvae found in the lungs during the day and emerge in the blood at night
wuchereria bancrofti
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Wuchereria bancroft is vectored by
Culex quinquefasciatus, mansonia uniformis, aedes
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sheathed and kinked with a gap between 2 subterminal nuceli
brugia malayia
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loa loa vector
chrysops
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diurnal periodicity in blood
loa loa
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nuclei to the end of a sheathed tail
loa loa
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unsheathed with nuclei to the tip of the tail
mansonella perstans
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nocturnally periodic filarial worm
wuchereria bancrofti
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Unsheathed with a gap between the last nuclei and the end of the tail
mansonella ozzardi
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caught by drinking water with infected crustaceans
dracunculus medinensis
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Rhodesiense trypanosomiasis
East African, Acute
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Gambiense trypanosomiasis
West and Central African, chronic
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Trypanosoma cruzi multiplies
in amastigote form in the smooth muscle of the gastrointestinal tract, heart muscle and skeletal muscle
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Leishmania multiplies when
Promastigotes are phagocytosed by macrophages and amastigotes develop
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Other cards in this set

Card 2

Front

1-8 nuclei, non pathogenic, irregular peripheral chromatin

Back

Entamoeba coli

Card 3

Front

Hole like nuceli

Back

Preview of the front of card 3

Card 4

Front

Large central body with multiple small granules within the cytoplasm periphery

Back

Preview of the front of card 4

Card 5

Front

Giardia lamblia

Back

Preview of the front of card 5
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