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Ch. 29 questions

Protozoal and Multicellular Parasite Diseases of GI Tract

QuestionAnswer
List three protozoans that cause intestinal tract infections Giardia lamblia, entamoeba histolytica, and Cryptosporidium parvum
What is the definitive host of a helminth? host in which the sexually mature form grows
What are the two physiological components (and their functions) of a tapeworm? scolex--head with sucker/hooks for attachment--proglottids--uteri that fill with eggs
How is Taenia saginata acquired? eating tapeworm cysts in undercooked beef
Describe pinworm (Enterobius vermicularis) spread and detection spread by scratching anus where eggs are laid--detection--cellophane tape pressed against the anal area and observed microscopically
Describe the circuitous route of Ascaris eggs develop into larvae on plants--eaten/swallowed--penetrate intestinal walls pass through lymph and lung coughed up/swallowed reinfect intestinal tract--eggs passed with feces-contaminate plants complete cycle
Created by: heatherlvn
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