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Parasitology: Nematodes

Total questions: 37

Worksheet time: 19mins

Name
Class
Date
1.

The juvenile stage of developing nematode worms is referred to as

a)

Eggs

b)

Cysts

c)

Larvae

d)

Adults

2.

Adult nematodes are never recovered in clinical samples.

a)

True

b)

False

3.

These individuals are prone to experiencing severe nematode infections

a)

Completely healthy individuals with a heavy worm burden

b)

Unhealthy individuals who are asymptomatic

c)

Healthy individuals with a light worm burden

d)

Unhealthy individuals with a heavy worm burden

4.

The specimen of choice for the recovery of Enterobius vermicularis is

a)

Stool

b)

Urine

c)

Cellophane tape prep

d)

Tissue biopsy

5.

The most likely individual to contract pinworm infection is(are) a(an)

a)

Older adult

b)

Child

c)

Adult prisoner

d)

Military personnel

6.

The morphologic forms recovered in cases of pinworm infection are which of the following?

a)

Eggs and adult females

b)

Adult males and females

c)

Eggs and larvae

d)

Larvae and adult males

7.

Trichuris trichiura eggs are characterized by the presence of which of the following?

a)

Triple-layer cell wall

b)

Flattened side

c)

Hyaline polar plugs

d)

Prominent cytostome

8.

Of the following choices, the best laboratory diagnosis technique for the recovery of Trichuris trichiura eggs is which of the following?

a)

Zinc sulfate flotation

b)

Modified acid-fast stain

c)

Ethyl acetate concentration

d)

Wright-Giemsa stain

9.

Children infected with Trichuris trichiura commonly suffer from

a)

Mental confusion

b)

Hemoglobinuria

c)

Severe anemia

d)

Rectal prolapse

10.

Individuals contract Ascaris lumbricoides via which of the following?

a)

Inhalation

b)

Insect bite

c)

Ingestion

d)

Inappropriate sexual practices

11.

The term that describes the lack of an outer mammillated albuminous coating is called which of the following?

a)

Unfertilized

b)

Fertilized

c)

Corticated

d)

Decorticated

12.

The specimen of choice for the recovery of Ascaris lumbricoides eggs is which of the following?

a)

Stool

b)

Gallbladder biopsy

c)

Urine

d)

Sputum

13.

This adult hookworm is characterized by a buccal cavity that contains teeth.

a)

Ancylostoma

b)

Necator

c)

Both Ancylostoma and Necator

d)

Neither Ancylostoma nor Necator

14.

Individuals contract hookworm via which of the following?

a)

Contaminated water

b)

Skin penetration

c)

Insect bite

d)

Contaminated food

15.

Which of the following are appropriate Ascaris lumbricoides prevention and control strategies?

a)

Proper water treatment

b)

Appropriate food handling

c)

Use of insect repellent

d)

Proper sanitation practices

16.

This diagnostic stage of Strongyloides stercoralis is best seen in stool using fecal concentration techniques:

a)

Eggs

b)

Rhabditiform larvae

c)

Filariform larvae

d)

Adult worms

17.

The life cycle of Stronglyoides most resembles that of which of the following?

a)

Pinworm

b)

Whipworm

c)

Hookworm

d)

Threadworm

e)

Human roundworm

18.

The two clinical symptoms most commonly associated with Trichinella spiralis are which of the following?

a)

Constipation and abdominal pain

b)

Vomiting urticaria

c)

Diarrhea and vomiting

d)

Abdominal pain and diarrhea

19.

The specimen of choice for the identification of Trichinella spiralis is which of the following?

a)

Cerebral spinal fluid

b)

Stool

c)

Skeletal muscle

d)

Urine

20.

The diagnostic stage of Trichinella spiralis is which of the following?

a)

Encysted larvae

b)

Cysts

c)

Eggs

d)

Adult worms

21.

Trichinosis is acquired via which of the following?

a)

Swimming in contaminated water

b)

Consuming contaminated water

c)

Ingestion of contaminated food

d)

Inhalation of contaminated air droplets

22.

New World Hookworm

a)

Necator americanus

b)

Ancylostoma duodenale

c)

Ancylostoma braziliense

23.

Old World Hookworm

a)

Necator americanus

b)

Ancylostoma duodenale

c)

Ancylostoma braziliense

24.

Creeping Eruption

a)

Necator americanus

b)

Ancylostoma duodenale

c)

Ancylostoma braziliense

25.

Found in stools of dogs and cats

a)

Necator americanus

b)

Ancylostoma duodenale

c)

Ancylostoma braziliense

26.

This may cause HIV Infections

a)

Strongyloides stercoralis

b)

Enterobius vermicularis

c)

Trichinella spiralis

d)

Necator americanus

27.

Itching in the perianal region

a)

Priuritus ani

b)

Pruritus ani

c)

Oviposit

d)

Ovapusit

28.

Deposit of Ova

a)

Priuritus ani

b)

Pruritus ani

c)

Oviposit

d)

Ovapusit

29.

This parasite may cause intestinal obstruction

a)

Trichuris trichura

b)

Ascaris lumbricoides

c)

Strongyloides stercoralis

d)

Enterobius vermicularis

30.

Clear bipolar plugs/polar plugs

a)

Trichuris trichura

b)

Ascaris lumbricoides

c)

Strongyloides stercoralis

d)

Enterobius vermicularis

31.

Select two: Football shaped eggs

a)

Trichuris trichura

b)

Ascaris lumbricoides

c)

Strongyloides stercoralis

d)

Enterobius vermicularis

32.

Enterobiasis is also called

a)

Enterobias

b)

Entero test

c)

Oxyuriasis

d)

Oxyureasis

33.

Identify the parasite:

a)

Enterobius vermicularis

b)

Strongyloides stercoralis

c)

Trichuris trichura

d)

Ancylostoma duodenale

34.

Identify the parasite:

a)

Enterobius vermicularis

b)

Strongyloides stercoralis

c)

Trichuris trichura

d)

Ancylostoma duodenale

35.

Identify the parasite:

a)

Enterobius vermicularis

b)

Strongyloides stercoralis

c)

Ascaris lumbricoides

d)

Ancylostoma duodenale

36.

Identify the parasite:

a)

Enterobius vermicularis

b)

Strongyloides stercoralis

c)

Ascaris lumbricoides

d)

Ancylostoma duodenale

37.

Identify the parasite:

a)

Enterobius vermicularis

b)

Strongyloides stercoralis

c)

Ascaris lumbricoides

d)

Trichinella spiralis

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