Gh Fajir Helminthic Parasites of Humans 3 groups of helminthes Cestodes tapeworms Trematodes flukes Nematodesroundworms Cestodes Trematodes Nematode Ribbonlike ID: 1039917
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1. HelminthsLab 11A.L. Lamieaa Gh. Fajir
2. Helminthic Parasites of Humans •3 groups of helminthes •Cestodes-tapeworms •Trematodes-flukes •Nematodes-roundworms
3. CestodesTrematodesNematodeRibbon-likeLeaf-like CylindricalShapesegmentedUnsegmented UnsegmentedbodyabsentPresent but incomplete without anusWell developed with anusAlimentary canal Carriers suckers and some also have hooksThere is sucker but no hookNosuker or hook but buccal capsul with teeth or cutting headThey are monoecious Hermaphrodite except SchistomesseparatedSex
4. Class:Cestodes General characteristics:End-parasiteBody consist ofproglottids and scolexScolex has (Hookes,Suckers and rostellum)No digestive system The adult form of T.solium cause Taeniasis soliumAnd larvae cause Cysticercosis
5. Three stages in Taenia are:(Adult ,Eggs ,Larva)Three types of segment are:(Immature ,Mature ,Gravid)In both spp. The larval stage called(Cystecercus)
6. Taenia •Taenia saginata is the beef tapeworm •Taenia solium is the pork tapeworm •Cattle and swine serve as the intermediate hosts •Humans living in close proximity to livestock have the highest incidence of infection •Cattle and swine become infected by eating contaminated vegetation •Humans ingest cysticerci in raw or undercooked meat •Adults attach to the intestinal epithelium
7. T.solium
8. T.saginata
9. Taeniasis -cystcercoides
10. Diagnosis methodsGeneral stool Examination (looking for gravid or eggs)X-radiography Ultra-sound graphyCAT-scan Immuno-dignostic techniqueSurgical(Routine for remove the systecercus)
11.