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18 Cards in this Set

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  • Back
Most important trematode in man?
Schistosoma
Adult flukes live in _______.
venules

S. japonicum & S. mansoni=mesenteric venules
S. haematobium=bladder venules
Intermediate host of blood flukes?
Snail
Infective stage of blood fluke (schistosoma)?
Cercariae in water directly penetrate skin of man
Definitive host of blood flukes?
Man
Human infection with bird schistosomes causes ______.
Swimmer's Itch
Conspicuous lateral spine
S. mansoni
Inconspicuous lateral knob
S. japonicum
Terminal spin
S. haematobium
Diagnostic stage of blood flukes is demonstration of egg in _____ or _____.
Feces or urine (S. haematobium)

-May NOT be seen in flotation techniques (large eggs sink)
Found in _______ hemisphere.
Western Hemisphere

Not in US due to lack of appropriate snail.
Cirrhosis of liver
S. mansoni
Bladder cancer
S. haematobium
Parasites that appear in URINE:
Enterobium vermicularis (egg)
Schistosoma haematobium (egg)
Parsites appear in MUSCLES:
Trichinella spiralis (larvae)
Parasites appear in BLOOD:
microfilarae (larvae)
-Except Onchocerca (skin)
Parasites appear in SPUTUM:
-Paragonimus westermani (egg)
-Ascaris lumbricoides (adults)
-Strongyloides stercoralis (adults, larva, eggs)
Parasites appear in LIVER/BILE:
Echinococcus granulosus (larvae)