Lecture 4 Nematoda and Annelida.pptx

Lecture 4 Nematoda and Annelida.pptx - Lecture 4 NEMATODA...

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Lecture 4 NEMATODA AND ANNELIDA
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Recap Rotifera corona Platyhelminthes Flatworms Triploblastic Protostome Acoelomate Bilateral symmetry Gastrovascular cavity Ladder Nervous system Flame cells for osmotic balance Hermaphrodites Eyespots Auricles - chemoreceptors Flukes Suckers attach to host Schistosoma – larvae infect final host where maturation and sexual repro occurs Hosts Human contaminates water source via excretion containing eggs larvae find secondary host SNAIL larvae infect humans Develop into adult flukes Live in blood vessels
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Recap Tapeworms scolex Proglottids Primary host – Human Secondary host – pig Muscle Dogs and Cats Most common Dipylidium caninum Host , dog, cat Intermediate host, fleas
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Phylum Nematoda Roundworms Characteristics Psuedocoelomates – works as a hydrostatic skeleton (muscular movement) Tapering at each end
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  • Spring '18
  • Bridget McGlaughlin
  • Annelid, hydrostatic skeleton, larvae infect, larvae infect humans, infect final host, sexual repro

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