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Phylum Platyhelminthes - The Flatworms

Phylum Platyhelminthes - The Flatworms.

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Phylum Platyhelminthes - The Flatworms

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  1. Phylum Platyhelminthes - The Flatworms

  2. General Characteristicsof PlatyhelminthesThese organisms are dorso-ventrally flattened and bi-laterally symmetrical. Instead of having an inert skin or cuticle they have a living surface membrane, the tegument. Unlike the protozoa they have distinct functioning systems such as muscle and nervous systems. They have complex reproductive systems having both male and female reproductive organs, usually within the same organism (hermaphroditic). They also have an excretory system and, with the exception of the tapeworms, have a primitive digestion system.Systems Characteristicshttp://www.mcwdn.org/Animals/Flatworm.html

  3. Planaria Anatomy

  4. Note eyespots Planaria- note branching gastrovascular cavity

  5. Planaria Organ Systems Ladder-like nervous system Digestive system Pharynx

  6. Regeneration of Planaria

  7. The Tapeworms

  8. Tapeworm Microanatomy Scolex Eggs in Proglottid

  9. Tapeworm Life Cycle

  10. Sheep Liver Fluke

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