1. By: Cassidy Rohlfing, Paige Oblack, Erin Long
Nematoda
By: Cassidy Rohlfing, Paige Oblack, Erin Long

2. What is a Nematoda? Bilateral Feeds on a Host Organism
Human, Dogs, Cats, etc.
Move by contraction of muscles
Thrashing 

3. Nervous System Present 4 peripheral nerves along body
Dorsal= motor control , Lateral= Sensory, Ventral= both motor control and sensory 
Fuse at head and tail 
Ring formed around pharynx known as "brain"
Sensory bristles on body 

4. Digestive System one- way Sharp stylet in mouth
Pharynx -> muscle less intestine 
Valves at ends of intestines 
Intestine lined by cuticle (rectum)

5. Excretory System Complex Removes Nitrogenous waste -> ammonia
1 pore cell, 1 duct cell, 1 canal cell, pair of glands 
Cell collects fluid, empties through duct
Cells joined at secretory- excretory junction 
Pass through duct-> outside of body

6. Circulatory System
Diffusion/osmosis
Exchange through skin 
Circulation 

7. Respiratory System Diffusion Obtains oxygen
Without use of complex organs

8. Skeletal System or Support
Absent 
Cuticle outer covering 
Shape and support 
Leverage point for movement
Sheds 4 times

9. Reproductive System Reproduction is sexual Majority are Dioecious
Only one sex
Hookworm
Some Hermaphrodites

10. Different Classes of Nematodes
Ascaris
Live in soil
Most common infection 
Live in intestine 
Eggs faced in feces
Block intestines and cause disease
Hookworm
Host= small animals and humans 
Eggs passed in feces 
Enter through soles of feet
Infections cause blood loss 

11. More Classes of Nematodes
Filaria
Human lymph system 
Spreads by mosquito bites of infected  
Causes elephantiasis 

12. Other Facts Where the name "round worm" comes from
Area they live (soil, H2O, host) 
Bucket of soil – 1 million 
Parasitic 

13. Body Cavity Not a true body cavity Have a pseudo coelom
Fluid filled body cavity that contains organs 

14. Work Cited
invertebrates/nematoda
system.html l

15. Pictures Cited
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