Parasitology

Protozoa

Identify the parasite to species (40 points)

1.  rosette schizonts, possible zoonosis

2.  two sporocysts per oocyst, opportunistic disease

3.  twins, ticks, transovarian infections, cattle

4.  butchers, cats, rats, congenital disease

5.  lizards, cockroaches, commmensal, 4 nuclei per cyst

6.  oral, pseudopodia

7.  AIDS opportunist, oocysts in soil

8.  large trophozoites, tertian, Duffy

9.  cribiform plate, cooling ponds of power plants

10. iodophilic, commensal, kidney-shaped glycogen vacuole

11.  pigs, Phillipines, amoebiasis -like symptoms

12.  hemoglobin in urine, sickle cell anemia

13.  poultry, caecum, highly species-specific, turkeys

14.  commensal, splintery chromatoidal bodies

15.  hexamitosis, turkeys

16.  Losch, "Amoeba coli"

17.  formerly the small "race" of E. histolytica, non-pathogen

18.  nearly 100 % of cattle infected, rare pathogen in man, Miescher's tubules

19.  cutaneous lesions, pisceans

20.  applique rings, hemozoin, multiple infections

II.  Compare the following organisms relative to:  (20 Points)

                                       erythrocytic periodicity     trophozoite   schizont      genus of vector         relapse or recrudescence?

Plasmodium vivax

Plasmodium malaria

Plasmodium falciparum

Plasmodium ovale

III.  Compare genetic and acquired immunity.  Discuss these two types of immunity relative to Plasmodium spp.  (10 points)

IV.  Provide five (5) epidemiological factors which guarantee the continued success of the following organisms

.  (15 points)

1.  Entamoeba histolytica

2.  Toxoplasma gondii

3.  Eimeria tenella

V.  Draw the following and label the parts.  (15 points)

1.  Iodamoeba butschlii cyst

2.  Gregarina polymorpha in syzygy

3.  Balantidium coli trophozoite

4.  Isospora hominis oocyst

5.  Plasmodium falciparum sporozoite