Parasitology Exam

introduction and flagellates

I.  Define the terms and give an example of each.  (10 points)

1.  facultative parasite

2.  paratenic host

3.  definitive host

4.  reservoir host

5.  zoonosis

II.  Identify the organism.  (30 points)

1.  pseudopodia, mostly binucleate

2.  Dum-Dum, Donovan

3.  monoxenous, North American quarantines, kinetoplast

4.  commensal, no cyst, colon

5.  cardiomyopathy, Brazil

6.  octaflagellate, avian diarrhea

7.  elephants, surra, Turkey

8.  anterior station, dry climate, pupation in crusty soil

9.  contagious mucous, Bolivia, Lutzomyia

10.  self-limiting, last immunity, Psycodidae

11.  abortions, trailing free flagellum

12.  Honduras, amastigotes, ear cartilage

13.  commensal, colon, flagella, no axostyle

14.  fleas, Taliaferro

15.  tabaniids, dyskinetoplasty

III.  Complete the chart. (30 points)

ORGANISM    SITE OF  INFECTION    VECTOR/NONE     DISEASE    ENDEMIC AREA/COUNTRY  DIAGNOSIS

Trypanosoma    
brucei brucei

                                  skin

                                                                       Lutzomyia

                                                                                                      murrina

                                                                                                                                    India

                                                                                                                                                                        xenodiagnosis

IV.  Name three epidemiological factors affecting the spread of the following:  (15 point)

1.  Trypanosoma cruzi

2.  Leishmania donovani

3.  Trichomonas vaginalis

4.  Giardia lamblia

5.  Trypanosoma brucei rhodesiense