????????? (Helminth)

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????????? (Helminth)
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????????? (Helminth)
Introduction to the worms ????????? (The
helminthic parasites) - ?????????????????????
(Multicellular) - ???????????? Bilaterally
symmetrical animal - ?? 3 germ layers
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• ?????????????????????? ???????????????
• ??????????????
• ?????????????? 3 ??? ????? ???
• 1. Phylum Platyhelminthes
• 1.1 Class Cestoidea (Tapeworms)
• 2.2 Class Trematoda (Flukes)
• 2. Phylum Nematoda (Round worms)
• 3. Phylum Acanthocephala

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1. Phylum Platyhelminthes - ?????????? ???
Dorso-ventrally - ???????????????????????????
??? ???????????? -
??????????????????????? - ??????????????????????
????????
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- ????????????? - ????????????? ????????????
2 ??? ?????? ??????????? ( ??????
??????????????? ??????????????) -
???????????????????????????? ?????? 1.1 Class
Trematoda (Flukes) - ?????? ??????????
1.2 Class Cestoidea (Tapeworms) - ??????
???????????
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1.1 Class Trematoda (Flukes) - ?????????? -
??????????????????? - ????????????????? -
??????????????????????? Y ???????
?????????????? ( Posterior) ???? 2
???? ?????
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- ?? 2 ??? ????????????? (?????? ?????
??????????) - ????????????? ?????? Asexual ???
Sexual Repro. Asexual Reproduction
????????????????? Sexual Reproduction
?????????????????????? - ?????????
????????????? ???? ???????????????????? -
?????????? ( snail , slug ) ???? Intermediate
host
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1.2 Class Cestoidea (Tapeworms) -
??????????? - ???????????
??????????????? ???????????
?????????? ??????? ???????? Scolex
(????????????????????
??????????) ?????? ????????
Neck
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????????? ???????? Proglottids ???????
????????? Immature Segment ????????
Mature Segment ???????? Gravid Segment -
??????????????? ?? 2 ??? ?????????????????
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2. Phylum Nematoda (Round worms)
- ?????? ???-??? - ?????????? -
????????????????? (Body cavity) -
???????????????????????
???????????????????????? (
????????? Esophagus Anus ?????
??????????????????????????????? )
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- ?????? ?????????? ??????? - ????????????
?????? ?????? ????????? ??????? - ?????????
??????????????? ??? ???????????
???????????????????????????? ???????????
??? cyst ?????????????????????
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3. Phylum Acanthocephala
- ??????????? ??? ??????????????? Anterior
proboscis ?????????? ???????????????????? -
?? 2 ??? - ???????????????????????
???????????? ??????????????????
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???????????????? Trematode , Cestode , Nematode
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