1. Platyhelminthes Quick Quiz: How long are the longest flatworms?
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Quick Quiz: How long are the longest flatworms?
Eugene Lee, Hyun Seok Lee

2. What Are Platyhelminthes?
Named because their bodies are thin between the dorsal and ventral surfaces
Platyhelminth
Eugene Lee

3. Sample Animal: Blood Fluke
Blood Fluke (Schistosoma Mansoni)
Trematoda
Schistosomiasis, a disease whose symptoms include pain, anemia, and dysentery.
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Eugene Lee

4. Sample Animal: Pseudoceros dimidiatus
Turbellaria
Yello/Black Stripes with Orange Edge
Found in Indo-Pacific, Red Sea
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Eugene Lee

5. 4 Classes of Platyhelminthes
Turbellaria
Monogenea
Trematoda
Cestoda
Schistosoma(Blood flukes)
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Hyun Seok Lee

6. Body Symmetry/Cavity None. No Skeletal System! Callioplana marginata
Eugene Lee
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7. Locomotion/Musculature
Uses Cilia on their ventral epidermis
Some other turbelarians use their muscles
Hyun Seok Lee

8. Nervous System Eyespots (Sensory Structure) Ventral Nerve Cords
Ganglia
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Eugene Lee

9. Excretory/Digestive System
Simple excretory apparatus
A combination digestive/excretory system
Mouth
Hyun Seok Lee
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10. Circulatory System Gastrovascular cavity
Eats small worms, insects, and microscopic matter
Eugene Lee

11. Reproduction Hermaphroditic Hyun Seok Lee
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Hyun Seok Lee

12. Gas Exchange Diffusion Hyun Seok Lee
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Hyun Seok Lee

13. Hyun Seok Lee, Eugene Lee
Quiz
What processes are occurring during gas exchange and excretory system?
How do flatworms reproduce? Through what process?
How do flatworms carry out excretory and digestive system?
Name 4 classes of Platyhelminthes
Hyun Seok Lee, Eugene Lee

14. Hyun Seok Lee, Eugene Lee
Answers:
Diffusion
Asexually
Through pharynx/Vastrovascular cavity
Turbellaria, Monogenea, Tremattoda, Cestoda
Hyun Seok Lee, Eugene Lee