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28 Cards in this Set

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