Parasitology  Exam

Nematodes and Comprehensive

I.  Identify the nematode. (40 points)

1.  parthenogenesis, larva currens

2.  visceral larva migrans, rodents

3.  nocturnal migration, caudal alae, common in childhood

4.  freshwater annelid, mink

5.  right ventricle, pulmonary arty

6.  filariform, three pairs of buccal teeth

7.  Sudan, ovoviviparous, Cyclops

8.  30-50 mm long, stylet, finger-clubbing

9.  three "lips", human night soil, 1.27 billion infections, circulatory migrations

10.  subcutaneous, unsheathed microfilaria, lizard skin

11.  fur seals, mother's milk

12.  stomach tumors, raw fish, copepods

13.  duodenum, coal miners

14.  rain forests of W. Africa, subcutaneous, sheathed microfiilaria

15.  rodents, liver

16.  stomach, herring, tuna

17.  pulmonary artery, rats, freshwater snails, slugs, planaria, frogs

18.  rhabditiform, fused spicules

19.  elephantiasis, Aedes

20.  cosmopolitan, zoonosis, eosinophilia, horsemeat

II.  Match the intermediate host with the parasite (10 points)

_____1.  Aedes aegyptii                                                            A.  Onchocerca volvulis

_____2.  Cyclops                                                                      B.  Plasmodium vivax

_____3.  Tenebrio molitor                                                          C.  Leishmania donovani

_____4.  Oncomelania formosona                                               D.  Trypanosoma brucei rhodesiense

_____5.  Simulium damnosum                                                     E.  Trypanosoma cruzi

_____6.  Glossina morsitans                                                        F.  Wucheria bancrofti

_____7.  Phlebotomus argentipes                                                G,  Hymenolepis diminuta

_____8.  Chrysops dimidiata                                                       H.  Schistosoma japonicum

_____9,  Panstrongylus megistus                                                   I.  Dracunculus mediensis

_____10 Anopheles quadrimaculatus                                            J.  Loa loa

                                                                                                       K.  Clonorchis sinensis

III.  Name five drugs we referred to this semester and name the organism (s) they are effective against. (10 points)

IV.  How do the life cycles of Ascaris, Strongyloides, and Necator show a sequential transition representing the evolution from free living to total parasitism?  (10 points)

V.  List 20 important human pathogenic parasites we have studied this semester.  Reduce the list to the ten most important and rank them in order of importance.  (#1 most important).  Do not include in either list more than one species of any genus. Base importance on: incidence of infection, pathology, geography, and economics.  (20 points)

VI.  List all the organisms which represent compelling reasons NOT to eat raw fish.  Name an endemic country where each may be found.  Why are there not a lot of parasites in the US, relative to raw fish eating?  (15 points)