Parasitology
Lecture Exam IV
Thomas P. Buckelew, Ph. D.
Fall 2005
I. Identify the nematode (20 points)
1. oasis, copepods
2. liver, rodents, aphasmidean
3. obligatory circulatory migration, Loeffler’s pneumonia
4. Chryops dimidiata, Calabar’s swellings
5. 20” long, small intestine
6. appendicitis, dioecious, cellophane tape test
7. polar bears, fish, plankton, eskimos
8. anemia, stylet, one billion + worldwide, monoxenous life cycle
9. fused spicules, slave trade, cutting plates
10. AIDS related, free living adults
11. visceral larva migrans, rodents
12. Aedes, lymphatic obstruction
13. two intermediate hosts, mink
14. marine fish, porpoises, stomach
15. pinworm of chickens, hyperparasitism, Histomonas meleagridis
16. sheathed microfilaria, Singapore
17. three pairs of “teeth”, anemia, copulatory bursa
18. highly resistant egg capsules, “warty”
19. Ascaris, Giardia, Entamoeba histolytica, common co-inhabitants
20. frogs, strongyloid-like life cycle
II. Identify the Parasite (20 points)
1. Flagyl, octaflagellate
2.
3. alveolar cyst, fox trappers
4. drunken crab, Semisulcospira, rice paddies
5. filariform, ground itch
6. “sticky” schizonts, brain involvement, high fever
7. Flagyl, venereal disease
8. cysticercosis
9. Winterbottom’s sign, Glossina, Kenya
10. dioecious, caecum, anemia, “plugged” egg capsules
11. gallinaceous, caecum, self-limiting disease, occysts
12. fish, copepods, pernicious anemia
13. ciliate, dysentery
14. cats, epilepsy, zoitocyst
15. facultative, hot springs, amebomeningoencephalitis
16. Phlebotomus, cutaneous, Iraq
17. Tenebrio, cysticercoid, heteroxenous
18. Panstrongylus megistus, thatched roofs, xenodiagnosis
19. dysentery, quadrinucleate cysts
20. Yangtze River, Oncomelania formosona
21. liver, halzoun, unembryonated egg capsules
III. Discussion (20 points)
Detail the life cycles of Necator, Strongyloides, and Ascaris. How are the life cycles related? How are they different? Explain a possible evolutionary relationship between these three.
IV. Fill in the chart with the nematode. Do not use any twice. (20 points)
ORGANISM INTERMEDIATE DEFINITIVE HOST MEANS OF ENDEMIC
HOST INFECTION COUNTRY
(state none if (USA cannot
applicable) be used)
Ascaris lumbricoidess
Simulium
damnosum
dog
encysted larvae
in muscle
Zaire
V. Give two epidemiological factors associated with each of the following. (10 points)
1. Enterobius vermicularis
2. Onchocerca volvulis
3. Trichinella spiralis
4. Necator americanus
5. Strongyloides stercoralis
VI. List the top ten parasites we have covered this semester and put them in order (#1 most important….#2 next in importance etc. Make up your list taking into consideration, degree of pathology, mortality, incidence of infection worldwide, and general misery the organism causes. Do not use any genus more than once. (10 points)