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This is about Schistosoma (blood flukes)
Typology: Assignments
2020/2021
1 / 4
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Download Online Classes Requirements and more Assignments Parasitology in PDF only on Docsity! SCHISTOSOMA 1. Differentiate the 3 species of Schistosoma by illustrating the Life Cycle. 2. Draw & label the 3 Schistosome ova. i = Infective stage 6 5 d = Diagnostic stage Cercariae penetrate skinSporocysts develop in snail (successive generations) i Schistosoma mansoni Inferior mesenteric vein Schistosoma japonicum Superior mesenteric vein Paired adult worms migrate to: Circulation Cercariae lose tails during penetration and become schistosomulae Free-swimming cercariae released from snail into water Eggs hatch and release miracidia 7 4 S. japonicum S. mansoni 8 S. haematobium 3 Migration to portal blood in liver and maturation into adults 9 Miracidia penetrate snail tissue 10 2 d 1 Elimination from the infected host as eggs in feces (S. japonicum and S. mansoni) or urine (S. haematobium) Schistosoma haematobium Urinary bladder
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