Parasitic Worms Websearch

Name ______Date ______Pd. _____ Parasitic Worms – Websearch Go to website http://www.scientificamerican.com/article.cfm?id=worms-human-parasites What part of the world’s population have worm infections? ______What three worms form the “unholy trinity” ? ______Why are people in developing countries more at risk for infection (give 2 reasons)? ______Which worm is most common in the USA and Europe? ______Click on the slideshow “Worms ‘N Us”. As you view each slide, be sure to click and read the complete text underneath. How are hookworms different from other parasitic worms? ______Trace the path of the larva from the skin to the intestines: ______Once in the intestines, what do the worms do? ______Go to the next slide. What is the disease caused by Roundworm? ______How do people catch this disease? ______Why are some cases deadly? ______Go to the next slide. How might a child catch Whipworm? ______How is Whipworm connected to Crohn’s Disease? ______Go to the next slide. How is Lymphatic Filariae different from most other worm infections? ______What is elephantiasis? What part of the body does if affect? ______

______How do you catch these worms? ______Go to the next slide. How do schistosomes move from snails to humans and back again? ______Go to the next slide. Where is Trichinella found? ______Why aren’t the larva destroyed in your stomach? ______Go to the next slide. How do people catch tapeworm? ______How long can tapeworms grow? ______How do most people figure out they have a tapeworm infection? ______Where can tapeworm live in your body besides intestines? ______Go to the next slide. What part of the body do pinworms live in? ______Explain why pinworm infections in children are cyclic: ______Go to website http://thebestnursingschools.net/info/bizarre-parasitic-life-cycles and compare the life cycles of Guinea worms versus Filarial Worms versus Lancet Liver Flukes: ______Go to website http://www.britannica.com/list/uninvited-guests-the-7-worst-parasitic- worms and write 2 interesting facts about each of the seven worms described in the website: 1. ______2. ______3. ______4. ______5. ______6. ______7. ______Go to website http://www.who.int/blindness/partnerships/onchocerciasis_disease_information/en/ What is Onchocerciasis and how is it transmitted? ______What are the symptoms of River Blindness? ______