nematelmintos
TRANSCRIPT
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Nematoda
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Pseudocelomados;
Corpo alongado,cilíndrico e delgado, com extremidades afiladas;
Maioria de vida livre;
Sexos separados com dimorfismo sexual;
Boca localizada na extremidade anterior do corpo, geralmente circundada por lábios ou papilas sensoriais.
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Ânus (fêmea) e cloaca (macho) localizam- se próximo da extremidade posterior do corpo;
Fecundação interna;
Não possuem células ciliadas e flageladas;
Sistema digestório com boca e ânus;
Apresentam uma cutícula rica em fibras colágenas revestindo o corpo;
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Pseudoceloma atua como esqueleto hidrostático;
Ausência de sistema circulatório e respiratório;
Excreção nitrogenada realizada pela parede do corpo (amônia).
Outros resíduos são eliminados por meio de estruturas excretoras especiais chamadas de renetes.
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Ascaridíase
Ascaris lumbricoides
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Ancilostomose
Ancylostoma duodenale Necator americanus
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Bicho-geográfico
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Filariose
Culex
Microfilária
Filárias adultas
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Enterobiose ou Oxiurose