Exam Review Helminths

Exam Review: Exam I-Helminths onlyW
What is the best direct diagnostic stage of Echinococcus granulosus infection in man.
Eggs or larvae that are recovered in the stool are routinely used to diagnose infections of which helminths?
Which cestode egg is charactierized by polar filaments
T. solium has how many uterine branches
T. saginata has how many uterine branches
What is unique about the proglottid of the cestode, D. latum
What is the host of D. latum
Cysticercosis is also called what other name?
Referring to the above questions, what are two ways that infection can be acquired?
Visceral larval migrans is caused by what organism? How does infection occur?
What type of helminth is Trichuris. Which stage is infective? Where in nature is the infective state found?
Cutaneous larval migrans is caused by what organism? How does infection occur?
Hydatid cyst is due to what organism(s) and how is it acquired?
What stage of T. saginata is infective for man?
What are the 4 main types of Schistosomes and from what main geographic area are they found?
What are the main medically important nematodes and their infective stages?
What is unique about each type of schistosoma egg? Location?
What is a trematode? What is unique about the egg? What is unique about the life cycle?
What is the largest trematode egg?
What is a parasite of herbivores that produces biliary obstruction?
What are the diseases caused by S. japonicum, haematobium, and mansoni
What are the vectors of the 5 helminths that are transmitted by an arthropod?
What common nematode enters through the skin? What is the diagnostic stage?
What helminthes could be found in sputum?
What is the name of the dog tapeworm?
What species of nematode egg has polar plugs?
What species of nematode egg is operculated?
What species of nematode egg can be fertile or non-fertile?
What is the cause of River Blindness?
What causes blindness and nodules?
What causes Calabar swellings?
How do you differentiate microfilariae? Among the traits, which organism is diurnal?
What worm is associated with rectal prolapsed? What is another name for this worm?
What is the diagnostic stage of Enterobius? What is unique about this stage? What is unique about the adult?
What larva is often found in immunocompromised patients? What state of larva? Where is the larva most likely to be found? How do you identify the larva?
How are the two species of hookworm differentiated?
What is the name of the Guinea worm? How is infection acquired? Where is the infection?
What is the cause of elephantiasis? What is elephantiasis?
If you want to isolate a microfilariae, what is your chief concern?
What is a scolex? A proglottid?
What are the 5 main cestodes? How are they diagnosed?
What are the 8 main trematodes? How are they diagnosed? What are of the world are they mainly found?
What is the intermediate host of T. solium? Of T. saginata?
What is a hydatid cyst?
What organism has a plerocercoid larva as an infective stage? Copepod and coracidium?
What type of helminth require metacercariae as part of their life cycle? Miracidia and snails?
What parasite uses a cercariae to penetrate skin as part of transmission?
What is a rostellum? What is a strobila? The integument?
What helminthes require an intermediate host? Which do not? Which one requires two?
What are the common body sites infected by the different helminths?
Study pages 30 and 31; 55 and 56; 76-There tables should be in your handouts.


For the lab exam: Be able to recognize the eggs of the helminths, Ascaris, Enterobius, a Schistosome,
Hymenolepsis, D. latum, the hook worms, the Taenias, Stronglyoides, a fluke, hydatid sand or a cystercercoid, the method used to visualize worm eggs, various life cycles. Questions on the structure of the parasite may be included in both the lab and lecture exam.