1. Bellringer /2
Describe what do you think happened to your flatworm child? How did this happen?
Have you ever consumed a parasite?
Announcements:
There will be a Quiz on worms next week!

2. In the lab: Make your day 2 observations of your flatworm child(ren)
When finished return to the classroom and work on row three of your phylum table

3. “...if all the matter in the universe except the nematodes were swept away, our world would still be dimly recognizable, and if, as disembodied spirits, we could then investigate it, we should find its mountains, hills, vales, rivers, lakes and oceans represented by a film of nematodes.” 
Nathan Cobb, 1915: Father of US Nematology 

5. Roundworms (Nematodes)
They can be found everywhere, including in and atop soil and in the water.
Parasites.
Along with infecting dogs, roundworms can infect humans, cats, birds and many other types of animals.

6. Classes
There are 2 classes of roundworms:
Parasitic
Non-parasitic

8. Characteristics of Roundworms
All Nematodes:
are invertebrates, and many are microscopic
have an elongated, slender, snakelike shape
move with a whip-like motion (no muscles, but a hydrostatic skeleton)
have a sense of touch, can detect light & certain chemicals
Breathe across their whole body

9. Nematode Video
Movement:
Explain why roundworms move so crazy.

10. Disease-causing Roundworms: Elephantiasis
Worm infects blood and lymph vessels
Transmitted by mosquitoes
Tropical parts of Asia
Swelling caused by blockage of lymph vessels

11. Disease-causing Roundworms: Ascaris
Parasitic roundworm
Affects humans, cats, dogs, horses, pigs, chickens
Cause severe malnutrition
Spread by eating food or water contaminated with Ascaris eggs
Intestine filled with Ascaris

12. Ascarids taken from children of one village.

13. Disease- causing roundworms: Trichinella
Transmitted by consuming improperly cooked pork
Trichinosis
Disease caused by trichnella

14. Trichinella completes its life cycle only when another animal eats muscle tissue containing these cysts.
Humans can get trichinosis by eating raw or incompletely cooked pork.

15. Hook Worms Enter the body through the skin on the soles of the feet
Live in the blood and intestines

16. Hookworms
Necator
Hookworms penetrate the bottoms of bare feet. Do not go barefoot.
This patient presented with a hookworm infection involving the toes of the right foot, which is also known as “ground itch”. Usually the first sign of infection is itching, and a rash at the site where skin touched contaminated soil or sand, which occurs when the larvae penetrate the skin, followed by anemia, abdominal pain, diarrhea, loss of appetite, and weight loss..

18. Guinea Worms

19. Guinea Worms
Dracunculus medinensis

20. Bell Ringer 10/20
How are roundworms different from cnidarians or flatworms
Describe the body of a roundworm.
Please have out your worm webquest, unsegmented worm note sheet and planarian lab.

21. Label the round worm on your note sheet

22. Roundworms
Roundworms