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Flashcards in Parasitology Deck (24)
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1
Q

Which parasites fall under the category of Helminths?

A

All that can be visible to the naked eye. Flatworm, Trematodes (flukes), Cestodes (tapeworms) and Nematodes (roundworms)

2
Q

What are 4 tests with which you can differentiate between Dirofilaria Immitis (Heartworm) and Acanthocheilonema (formerly Dipetalonema reconditum) larvae?

A

Modified knott’s test, filter test, buffy coat method or ELISA

3
Q

What are 2 tests commonly performed for Ectoparasites?

A

Skin scraping or scotch tape test

4
Q

Where does Toxocara reside in the body and how is it transmitted?

A

In small intestine. Via ingestion of egg, paratenic host, transplacentally or transmammary

5
Q

How are hookworms transmitted?

A

Ingestion of larvae or skin penetration

6
Q

Where does Dioctophyma Renale reside in the body? How is it transmitted?

A

Kidney. Ingestion of intermediate or paratenic host. (earth worm or fish/frogs)

7
Q

How is Toxocara canis identified microscopically in the diagnostic stage?

a) Clear, smooth and thin-walled eggs
b) Yellow-brown thick-walled eggs with striated shells and asymmetric plugs
c) Dark brown, thick-walled egg with pitted eggshell
d) L1 with S-shaped tail

A

C

8
Q

Ancylostoma caninum can be contrated how?

a) Through skin
b) Autoinfection by remigration through the rectum
c) Bite from infected mosquito
d) Ingestion of a flea

A

A

9
Q

The intermediate host of Dipylidium caninum is the:

a) Squirrel
b) Tick
c) Cow
d) Flea

A

D: Fleas incubate and are the intermediate host for this tapeworm

10
Q

Signs that would indicate a dog has a severe infection of Otodectes cynotis would include:

a) Head tilt, otitis media circling, seizures
b) Shaking head, scratching ears
c) Skin becomes thick and wrinkled, emaciation
d) Severe tail, leg or scrotal mange

A

A

11
Q

Ixodes scapular is the vector for:

a) Rocky Mountain Spotted Fever
b) Lyme disease
c) Tularemia
d) Q fever

A

B: Borrelia Burgdorferi (Lyme disease)

12
Q

Which of the following is zoonotic?

a) Cystoisospora canis
b) Trichuris vulpis
c) Parascaris equorium
d) Dipylidium caninum

A

D: by ingesting a flea

13
Q

Which order do the biting lice belong to?

a) Hemiptera
b) Anoplura
c) Diptera
d) Mallophaga

A

D

14
Q

One of the great advantages of centrifugal flotation technique is to:

a) Detect giardia oocysts and Trichuris ova more efficiently
b) Detect protozoa
c) determine number of eggs per gram of feces
d) determine SG of parasitic material

A

A

15
Q

For which parasite is the tape method useful?

a) Thelazia californiensis
b) Eimeria spp
c) Oxyuris equi
d) Balantidum coli

A

C

16
Q

A hexacanth is the detachable infective stage of a:

a) tick
b) mite
c) pinworm
d) tapeworm

A

D

17
Q

Giardia and Leishmania are examples of:

a) Ameba
b) Ciliates
c) Flagellates
d) Sporozoa

A

C

18
Q

Which of the following tests is best for removing lungworm larvae from small samples of feces?

a) Centrifuge
b) McMaster
c) Baermann
d) Direct smear

A

C

19
Q

Which subgroup to tapeworms fall under?

a) Thorn-head helminth
b) Nematode
c) Cestode
d) Trematode

A

C

20
Q

When diagnosing Heartworm on a Knott’s test, the microflaria must be differentiated from which nonpathogenic filarial larvae?

a) Onchocera
b) Acanthocheilonema
c) Stephanofilar
d) Aehrostrongylus

A

B

21
Q

The life stage of the flea found on the skin of its host is the:

a) pupal
b) larval
c) egg
d) adult

A

D

22
Q

The prepatent period for Trichuris vulpis is:

a) 3 months
b) 2 weeks
c) 5-10 days
d) 5-6 months

A

A

23
Q

Sucking lice have which characteristics:

a) Body laterally compressed, broad head
b) Scutum ornate
c) Narrower head than the thorax
d) Basis capithulum

A

C

24
Q

Hyostrongylus rubidus is the red stomach worm of:

a) pig
b) cat
c) dog
d) horse

A

A