Helminths (Exam #3) Flashcards
What is the most common Helminth in the U.S.?
Enterobius vermicularis = Pinworm
What organism involves gravid female (with eggs) depositing eggs at perianal region?
Enterobius vermicularis = Pinworm
- Helminths
What organism involves pruritus ani?
Enterobius vermicularis = Pinworm
- Helminths
What organism involves diagnosis of cellophane test method?
Enterobius vermicularis = Pinworm
- Helminths
What are the two soil nematodes? What population are these most commonly seen in?
CHILDREN
- Ascaris lumbricoides = Ascariasis (“large intestinal roundworm”)
- Trichuris trichiura = Trichuriasis (“whipworm”)
What organism can cause blockage, Loeffler’s Syndrome (pulmonary)?
Ascaris lumbricoides = Ascariasis (“large intestinal roundworm”)
- Helminths
What organism is also called “large intestinal roundworm”?
Ascaris lumbricoides = Ascariasis
- Helminths
What organism is also called “whipworm”?
Trichuris trichiura = Trichuriasis
- Helminths
What organism involves “egg capsules”?
Trichuris trichiura = Trichuriasis (“whipworm”)
- Helminths
What organism involves painful passage of stool?
Trichuris trichiura = Trichuriasis (“whipworm”)
- Helminths
What organism feeds on blood of intestinal mucosa?
Hookworms (N. americanus, A. duodenale)
- Helminths
Which two Nematode (Helminth) organisms can penetrate skin?
- Hookworms (N. americanus, A. duodenale)
- Strongyloides stercoralis = Strongyloidiasis (“threadworms”)
What organism involves blood-filled pruritic lesions (“ground itch”)? What other symptom may be seen?
Hookworms (N. americanus, A. duodenale)
- Helminths
+/- Anemia
Which Nematode (Helminth) organism is NOT immediately infectious? Why is this?
Hookworms (N. americanus, A. duodenale)
- Helminths
Eggs laid do not mature until in soil (have egg capsule)
- Once hatched, larvae can penetrate skin and infect human
What organism can multiply in the host (parasitic) or in soil (free living)?
Strongyloides stercoralis = Strongyloidiasis (“threadworms”)
- Helminths
What organism’s entrance to the human body can be visualized (this is used diagnostically)? What else is this organism capable of doing symptomatically?
Strongyloides stercoralis = Strongyloidiasis (“threadworms”)
- Helminths
Can autoinfect, leading to chronic infections
If a patient has Strongyloides stercoralis = Strongyloidiasis (“threadworms”), what could possibly cause the infection to become life-threatening?
Cell-mediated immunity
Of the two Tapeworms (Helminths), which is found in pork and which is found in beef?
- Taenia solium = PORK
- Taenia saginata = BEEF
What organism is leaf-like, flat, LARGE and hemaphroditic?
Trematodes (Flukes)
- Helminths
What organism involves a scolex?
Tapeworms = T. solium, T. saginata
- Helminths
Which Helminth organism has two intermediate hosts and one definitive host?
Tapeworms = T. solium, T. saginata
- Helminths
With Tapeworms = T. solium, T. saginata, what condition can develop IF infected eggs are ingested by humans?
Cysticercosis
What organism involves proglottids that contain infectious eggs and are released in feces?
Tapeworms = T. solium, T. saginata
- Helminths
How does Diphyllobothrium latum = Diphyllobothriasis (Fish Tapeworm) differ from T. solium, T. saginata (Tapeworms)?
D. latum eggs are released SINGLY
- NOT in proglottids like T. solium, T. saginata (Tapeworms)
What is another name for Diphyllobothrium latum = Diphyllobothriasis?
Fish Tapeworm
- Helminths
What two signs/symptoms may present with Diphyllobothrium latum = Diphyllobothriasis (“Fish Tapeworm”)?
- Vitamin B12 deficiency
- Anemia
