PARASITOLOGY

1. PARASITOLOGY JEOPARDY WEILL CORNELL MEDICAL COLLEGE - QATAR

2. This motile stage of a protozoan feeds, multiplies, and maintains the colony within the host. Trophoziote WEILL CORNELL MEDICAL COLLEGE - QATAR

3. This form of Plasmodium develops inside the sporocyst, invades the salivary glands of the mosquito, and is transmitted to humans. Sporozoite WEILL CORNELL MEDICAL COLLEGE - QATAR

4. This is the name given to any arthropod or other living carrier that transports a pathologic microorganism from an infected to a noninfected host. Vector WEILL CORNELL MEDICAL COLLEGE - QATAR

5. This is the name given to the trophozoites released from human red blood cells or liver cells at maturation of the asexual cycle of malaria. Merozoite WEILL CORNELL MEDICAL COLLEGE - QATAR

6. This organism causes traveler’s disease which is characterized by abdominal pain, diarrhea, foul-smelling gas, and mechanical irritation of intestinal mucosa with shortening of vili and inflammatory foci. Giardia lamblia WEILL CORNELL MEDICAL COLLEGE - QATAR

7. Humans are the only definitive host for these parasites which usually causes asymptomatic infections although abdominal pain, diarrhea and weight loss can occur following ingestion of undercooked beef or pork (genus name only). Taenia WEILL CORNELL MEDICAL COLLEGE - QATAR

8. This parasitic disease ranks second behind malaria as a cause of serious worldwide morbidity and mortality and is spreading and increasing because of recent new water control projects which provide increased snail breeding areas. Schistosomiasis WEILL CORNELL MEDICAL COLLEGE - QATAR

9. This parasite has two forms in its life cycle: one which multiplies in macrophages in man, and a second which is found in the midgut of the sandfly (genus name only): Leishmania WEILL CORNELL MEDICAL COLLEGE - QATAR

10. This organism causes small intestinal edema and inflammation, nausea, vomiting, abdominal pain, headache, and fever with a rising eosinophilia and can be identified as encapsulated larvae in biopsied muscle in severe cases but is usually non-life-threatening: Trichinella spiralis WEILL CORNELL MEDICAL COLLEGE - QATAR

11. The egg of this blood fluke is characterized morphologically by a large lateral spine which serves as an important diagnostic feature in differential diagnosis. Schistosoma mansoni WEILL CORNELL MEDICAL COLLEGE - QATAR

12. This worldwide parasite often causes chronic infection associated with vague abdominal discomfort, malaise, diarrhea alternating with constipation (sometimes confused with ulcerative colitis) often lasting for years and can sometimes invade the liver and cause a single abscess in the right lobe. Entamoeba histolytica WEILL CORNELL MEDICAL COLLEGE - QATAR

13. Infection with this third most common helminth causes weight loss and weakness and is common among children and institutionalized individuals and is seen in warm countries and the southern US. Trichuris trichiura WEILL CORNELL MEDICAL COLLEGE - QATAR

14. Infection with this parasite is usually limited to minute ulcers and mild inflammation of the intestine causing severe perianal itching (genus name only). Enterobiasis WEILL CORNELL MEDICAL COLLEGE - QATAR

15. This organism causes sleeping sickness. Trypanosoma brucei WEILL CORNELL MEDICAL COLLEGE - QATAR

16. This protozoan infection can be contracted from infected cats. Toxoplasmosis WEILL CORNELL MEDICAL COLLEGE - QATAR

17. This class of agents is used for the treatment of Leishmanias. Antimonial compounds (other acceptable answers are Sodium stibogluconate also known as Pentostam, or Meglumine antimoniate also known as Glucantime) WEILL CORNELL MEDICAL COLLEGE - QATAR

18. The sickle cell gene provides a selective advantage to parasitemiacaused by this organism. Plasmodia falciparum WEILL CORNELL MEDICAL COLLEGE - QATAR

19. Oocysts of this small spherical parasite are fully mature andimmediately infectious upon passage in the feces. Cryptosporidia WEILL CORNELL MEDICAL COLLEGE - QATAR

20. This ameba can lyse colonic epethelial cells producing small mucosalulcerations. Entamoeba histolytica WEILL CORNELL MEDICAL COLLEGE - QATAR

21. This organism is usually sexually transmitted and causes a persistentvaginitis. Trypanosoma brucei WEILL CORNELL MEDICAL COLLEGE - QATAR

22. These structures are typically observed microscopically in tissuebiopsies or aspirates obtained from patients with leishmanias. Leishman-Donovan bodies (another acceptable answer is amastigotes) WEILL CORNELL MEDICAL COLLEGE - QATAR

23. Antigenic variation is the principal mechanism of evading immunedestruction by this organism. Trypanosoma brucei WEILL CORNELL MEDICAL COLLEGE - QATAR

24. This parasitic disease is the leading cause of heart disease in Southand Central America. Chagas disease WEILL CORNELL MEDICAL COLLEGE - QATAR

25. Members of this superfamily of parasites can gain access to the humanlymphatic system and may induce lymphadenitis, eosinophilia and in extremecases elephantiasis. Filiarioidea WEILL CORNELL MEDICAL COLLEGE - QATAR

26. This organism causes river blindness and is transmitted by blackfly-larva. Onchocerca volvulus WEILL CORNELL MEDICAL COLLEGE - QATAR

27. THE END