Parasitology Exam

flagellates, amoebae, sporozoans, ciliates, opalinids

I.  Identify the following organisms. (40 points)

1.  Schizotrypanum, megacolon

2.  nasal septum, amastigotes

3.  trypanocidal antibody, ablastin

4.  trophozoites, cysts, Flagyl, back packers plight

5.  sometimes seen in urine sediment, Flagyl

6.  15N-25S longitude, Glossina morsitans

7.  human colon, commensal, flagella, no cyst

8.  heteroxenous, intracellular, Chiclets

9.  post-dermal leishmanoid, Dum-Dum

10. artificial insemination concern in cattle, abortions

11.  no reservoirs, Winterbottom

12.  hexamitosis, galliforms

13.  enterohepatitis, secondary infections with Clostridium

14.  hyperparasitism, humans, often binucleate

15.  continental drift hypothesis, multinucleate

16.  kinetoplast, monoxenous

17.  phlebotomine, Iraq, cutaneous

18.  human colon, commensal, flagella, cyst

19.  kissing, no cysts, flagella

20.  Brahm Stoker, murrina

II.  Briefly discuss three epidemiological factors involved in the spread of the following organisms. (12 points).

1.  Trypanosoma cruzi

2.  Leishmania donovani

3.  Trypanosoma brucei gambiense

4.  Giardia lamblia

III.  Complete the chart. (25 points...do not use any twice)

ORGANISM         SITE OF INFECTION     VECTOR/NONE          DISEASE               GEOGRAPHICAL LOCATION              DIAGNOSIS

Trichomonas  vaginalis

                                     
                               blood, cerebrospinal fluid

                                                                           Lutzomyia spp.

                                                                                                               Kala-azar

                                                                                                                                                        cosmopolitan

                                                                                                                                                                                                        xenodiagnosis

IV.  Explain how evolution plays a role in host specificity.  How are zoonoses related to the concept of host specificity?  (10 points).