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28 Cards in this Set
- Front
- Back
Describe infection/life cycle of ascaris lumbricoides.
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Larvae hatch in gut, migrate thru lung tissue, swallowed then mature in gut. Egss passed in feces where they infect others via fecal-oral contamination.
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Larvae migration may induce wha illness in ascaris lumbricoides?
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eosinophilic pneumonitis
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Rarely, ascaris lumb. can cause what other complications?
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Obstruction of colon, appendix, or biliary tree
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What is the most common hookworm in the USA?
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Necator americanus
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What is the most common symptom of hookworm infection?
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Anemia
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Describe infection/life cycle of ascaris lumbricoides.
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Larvae hatch in gut, migrate thru lung tissue, swallowed then mature in gut. Egss passed in feces where they infect others via fecal-oral contamination.
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Larvae migration may induce wha illness in ascaris lumbricoides?
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eosinophilic pneumonitis
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Rarely, ascaris lumb. can cause what other complications?
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Obstruction of colon, appendix, or biliary tree
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What is the most common hookworm in the USA?
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Necator americanus
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What is the most common symptom of hookworm infection?
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Anemia
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How is infection of hookworm acquired?
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Entry of soil larvae thru intact skin.
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True of False. Hookworms multiply within host.
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False
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How do hookworms maintain blood flow?
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Anticoagulant secreted
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What is ground itch associated with?
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Hookworm infection
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What is pitting edema and cardiac tiger stripes assocated with?
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Hookworms
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What areas of the world are common for trichuris trchiuria?
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Tropical and subtropical areas
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What are the symptoms of trichuris infection?
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Diarrhea, tenesmus, rectal prolapse
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Describe the trichuris egg.
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Bioperculated ring, plug on both ends.
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Why are trichuris called whip worms?
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Long, skinny tail look like a whip.
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What is unique about strongyloidiasis life cycle?
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Only helminthic infection that completes entire life cycle in human.
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Toxocara canis and catis have what hosts and cause what symptoms in humans?
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Cats and dogs, eye is affected
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Schistosomiasis is caused by what 3 helminths?
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Schistosoma mansoni, japonicum, and hematobium.
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How is schistosomiasis infection caused?
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Contact with fress water infested with snail that contain the larvae.
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Describe the spine of schistosoma hematobium eggs and where they are found.
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Terminal spine, urine/bladder
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Describe the schistosoma mansoni egg.
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Lateral spine
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What is swimmers itch associated with?
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Trematode infection
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What is common name for cestodes?
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tapeworm
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What is the most common cause of epileptic seziures in someone from the topics?
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Migration of cysticeicosis.
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