UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
Multiple Choice Questions (MCQ)
 You are allowed to choose the only one answer for each you think it is the best one.
1) Lung flukes of the genus parasitic species, endemic in parts of Asia, Africa, and
America, parasitize in pulmonary cysts and cause a tuberculosis-like clinical picture.
a. Paragonimus
b. Fasciola species
c. Schstosoma species
d. Opisthorchis viverrini
2) Fasciola hepatica, the liver fluke, has a complex life cycle, requiring intermediate
hosts in order to complete their life cycle.
a. Ruminants
b. Water snails
c. Environment
d. Fresh water fishes
3) Risk for Cholangiocarcinoma: There are several parasites that cause liver fluke
infections, including the following statement is correct except:
a. Fasciola
b. Clonorchis
c. Opisthorchis
d. Schistosome species
4) Laboratory diagnosis: The definitive diagnosis of digestive schistosomiasis is made
by rarely finding the characteristic ova of parasite in fecal specimen.
a. S. Haematobium
b. S. intercalatum
c. S. Mansoni
d. S. mekongi
5) Laboratory diagnosis: The definitive diagnosis of urinary schistosomiasis is made by
finding the characteristic ova of parasite in urine.
a. S. Haematobium
b. S. intercalatum
c. S. Mansoni
d. S. mekongi
6) Infective stages can be transmitted to humans by eating the crabs or crayfish
uncooked.
a. Paragonimus
b. Fasciola species
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
c. Schstosoma species
d. Opisthorchis viverrini
7) The worms lay thousands of eggs that cause damage as they work through organs.
a. Liver
b. Lungs
c. Tissues
d. Intestines
8) Fasciola hepatica: The adult worm measures from 15 to 30 mm long and 10 mm wide
and lives in the specific organ of wild and domestic mammals, as well as those of
humans.
a. liver
b. Lungs
c. Intestine
d. Bile duct
9) The parasitic stage matures into worms in the blood supply of the liver, intestines,
and bladder.
a. Worms
b. Cercariae
c. Miracidiae
d. Schistosomulae
10) The following statements concerned snail-borne parasitic diseases are correct except:
a. Paragonimiasis
b. Diphyllobothriosis
c. Fascioliasis or fasciolopsiasis
d. Clonorchiasis or opisthorchiasis
11) Infective stages can be transmitted to humans by eating the crabs or crayfish
uncooked.
a. Rediae
b. Cercariae
c. Miracidiae
d. Metacercariae
12) The plants posing a risk are generally of wild origin. There is no treatment available
to sanitise a contaminated plant that is consistent with the presentation of a product
intended to be consumed fresh.
a. Taenia species
b. Fasciola species
c. Echinococcus species
d. Dyphillobothrium latum
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
13) Released into the water, the parasitic stage penetrates human skin, transforming into
another parasitic stage.
a. Eggs
b. Worms
c. Cercariae
d. Miracidiae
14) Fasciola hepatica, the liver fluke, has a complex life cycle, requiring intermediate
hosts in order to complete their life cycle.
a. Ruminants
b. Watercress
c. Environment
d. Fresh water fishes
15) Snails have four roles in the life cycles of the parasites they host as an intermediate
host infected are correct except:
a. Redia
b. Cercaria
c. Miracidia
d. Metacercaria
16) Lung flukes of the genus Paragonimus require intermediate hosts such as:
a. Fresh water fish
b. Fresh water snails
c. Water cress (plants)
d. Freshwater snails and crabs or crayfish
17) Infecting the snails, the parasitic stage multiplies, producing one stage called:
a. Eggs
b. Worms
c. Cercariae
d. Miracidiae
18) The parasites are perpetuated in life-cycles with carnivores as definitive hosts, which
harbour the adult egg-producing stage in the intestine, and intermediate host animals,
in which the infective metacestode stage develops after peroral infection with:
a. Eggs
b. Adults
c. Lavars
d. Protoscoleces
19) The parasitic stage called another parasitic stage hatches from the one stage then seek
out certain species of snails.
a. Eggs
b. Worms
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
c. Cercariae
d. Miracidiae
20) Fasciola hepatica: Localisation of the adult worm is in the target organ of hosts.
a. Lungs
b. Biliary channels
c. Lumen of the intestine
d. Parenchyma of the liver
21) The parasitic larvae live in fresh water and can penetrate human skin, placing people
at risk through everyday activities such as washing laundry or fetching water.
a. Schistosome
b. Opisthorchis
c. Paragonimus
d. Diphyllobothrium latum
22) Parasite eggs are detectable in sputum or stool.
a. Schistosome
b. Opisthorchis
c. Paragonimus
d. Diphyllobothrium latum
23) The adult Echinococcus granulosus (3 to 6 mm long) resides in the organ of the
definitive hosts, dogs or other canids.
a. Liver
b. Lungs
c. Musculature
d. Small bowel
24) Parasitic stage: It is a very common type of worm found in the dog and cat. The
diagnosis is made by seeing the tapeworm segments in the faeces. It looks like small
grains of “rice” on the surface of freshly passed faeces, or sometimes it “crawls” out
of the anus.
a. Dipylidium caninum
b. Dyphyllobothrium latum
c. Hymenolepis nana
d. Taenia saginata
25) Fasciola gigantica: Localisation of the adult worm is in the target organ of hosts.
a. Lungs
b. Biliary channels
c. Lumen of the intestine
d. Parenchyma of the liver
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
26) Echinococcosus granulosus: the oncosphere develops into a cyst that enlarges
gradually, producing other parasitic stages that fill the cyst interior.
a. Cysts
b. Protoscolices
c. Daughter cysts
d. Protoscolices and daughter cysts
27) The definitive host becomes infected by ingesting the parasitic stage-containing
organs of the infected intermediate host.
a. Egg
b. Cyst
c. Oncosphere
d. Protoscolices
28) Diphyllobothriasis: Infection with the adult worm is acquired by the ingestion of
raw, poorly cocked or pickled fresh water fish containing:
a. The eggs
b. The cysts
c. The sporocysts
d. The encysted plerocercoid larvae
29) Parasitic larvae may form massive cysts in liver, lungs, and other organs, including
long bones and the central nervous system.
a. Taenia solium
b. Diphyllobothrium latum
c. Hymenolepis nana and diminuta
d. Echinococcus granulosus hydatid
30) Human fascioliasis is associated with the presence of infected mammals (especially
on farms) and the consumption of plants grown in damp conditions. Humans become
infected by ingesting raw fresh produce carrying:
a. Rediae
b. Cercriae
c. Miracidiae
d. Metacercariae
31) Symptoms of long-term infection may mimic bronchitis or tuberculosis, with
coughing up of blood-tinged sputum.
a. Paragonimiasis
b. Diphyllobothriosis
c. Fascioliasis or fasciolopsiasis
d. Clonorchiasis or opisthorchiasis
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
32) Larval Tapeworms: Larvae locate in extra-intestinal tissues and produce systemic
infections with clinical effects related to the size, number, and location of cysts,
except
a. Taenia solium
b. Taenia asiatica
c. Taenia saginata
d. Echinococcus granulosus hydatid
33) cysticercosis (infection with the cysticercus larval stage) is often asymptomatic and
chronic; neurocysticercosis, ophthalmic cysticercosis, and subcutaneous and
muscular cysticercosis are, however, frequently reported.
a. Taenia solium
b. Taenia asiatica
c. Taenia saginata
d. Echinococcus granulosus hydatid
34) Diphyllobothriasis is caused by intestinal infections, and the main species associated
with this condition is the broad-tapeworm. Humans become infected by ingesting the
parasitic stage in raw or undercooked material.
a. Eggs
b. Larval stages
c. tapeworm cysts
d. Larval stages, (plerocercoids)
35) The incidence of human infection with the broad tapeworm has been increasing in
urban areas of Japan and in European countries. Clinical signs in humans include
diarrhea and discharge of the strobila, which can be as long as 12 m.
a. Taenia solium
b. Taenia saginata
c. Diphyllobothrium latum
d. Hymenolepis nana and diminuta
e.
36) Eggs distributed in the blood stream induce inflammatory granulomas in various
organs.
a. Paragonimiasis
b. Diphyllobothriosis
c. Fascioliasis or fasciolopsiasis
d. Clonorchiasis or opisthorchiasis
37) Tapeworms, known as “fish tapeworms” or “broad tapeworms”: the life cycles of
these species are complex, comprising of 2 intermediate hosts (a copepod and a fish)
and a definitive host (humans or other piscivorous mammals).
a. Taenia solium
b. Taenia saginata
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
c. Diphyllobothrium latum
d. Hymenolepis nana and diminuta
38) Fasciola hepatica: The adult flukes lay their eggs in the specific organ. The eggs are
eliminated by that organ and then pass through the bowel into the external
environment.
a. Liver
b. Lungs
c. Intestine
d. Bile ducts
39) Morphology: A strobila of Diphyllobothrium latum expelled by the patient (about
260 cm), and eggs extracted from the uterus were
a. Round
b. Ovoid
c. Operculated
d. Ovoid and operculated
40) A fish tapeworm infection can occur when a person eats raw or undercooked fish that
is contaminated with the parasite.
a. Taenia solium
b. Taenia saginata
c. Diphyllobothrium latum
d. Hymenolepis nana and diminuta
41) The adult tapeworms live in the intestines of the definitive hosts. This infection is
called taeniasis. Humans are the definitive hosts for Taenia specie. Larvae are more
likely to cause disease than the adult tapeworms.
a. Taenia solium
b. Taenia saginata
c. Diphyllobothrium latum
d. Hymenolepis nana and diminuta
42) Taenia larvae are found in the muscles, central nervous system (CNS), and other
tissues of the intermediate hosts. Larvae are more likely to cause disease than the
adult tapeworms.
a. Taenia solium
b. Taenia saginata
c. Diphyllobothrium latum
d. Hymenolepis nana and diminuta
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
43) Organs in which cystic metacestods developed in humans are infected by per oral
ingestion of parasitic stage, from which in CE, liquid-filled cystic metacestodes (the
hydatids) developed, particularly in:
a. The liver
b. The lungs
c. The liver and lungs
d. The large and small intestine
44) Humans can also be infected by larval stages of various tapeworm species, and these
stages develop in body tissues and generally cause considerably great pathological
damage.
a. Taenia solium
b. Taenia asiatica
c. Taenia saginata
d. Hymenolepis nana
45) Trematode worms Schistosoma mansoni, S. haematobium, S. intercalatum, and S.
guineensis (formerly known as S. intercalatum).S. haematobiumspecies
groupcontains 8 species, of which not all cause human disease.
a. Agent
b. Reservoir
c. Transmission
d. Vector
46) Humans are the main one of the statements below. S. haematobium can infect
primates, livestock and rodents. S. mansoni, S. intercalatum, and S. guineensis can
infect rodents.
a. Agent
b. Reservoir
c. Transmission
d. Vector
47) Contact with freshwater bodies containing cercariae that penetrate skin or mucous
membranes; drinking contaminated water (uncommon).
a. Agent
b. Reservoir
c. Transmission
d. Vector
48) Technically, humans are the one of the statements below as they harbor the parasite’s
sexual stage.
a. Agent
b. Reservoir
c. Transmission
d. Vector
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
49) S. haematobium schistosomula ultimately migrated from one organ to another is
correct except one.
a. The liver
b. The perivesical venous plexus of the bladder
c. The ureters
d. The kidneys through the hemorrhoidal plexus
50) Humans can also be infected by larval stages of various tapeworm species, and these
stages develop in body tissues and generally cause considerably great pathological
damage.
a. Cysticercosis
b. Hymenolepiasis
c. Schistosomiasis
d. Taeniasis
51) Parasite, also called the flea tapeworm and shape of its cucumber-seed-like
proglottids. Parasite is a tapeworm that commonly infects dogs and cats.
Transmitting by ingestion of an infected flea, parasite occasionally affects humans,
especially children.
a. Taenia saginata
b. Hymenolepis nana
c. Dipylidium caninum
d. Dyphyllobothrium latum
52) Diagnosis can be made by detection of Schistosoma eggs in stool except one be
found in the urine.
a. S. hematobium
b. S. intercalatum
c. S. japonicum
d. S. mansoni
53) Human diphyllobothriasis is a parasitic disease caused by ingestion of parasitic stage
in raw or undercooked fish.
a. Eggs
b. Larvae
c. Metacercariae
d. Plerocercoids
54) The metacestodes develop in the musculature of pigs, or through accidental infection
in humans as well (CNS, eyes, musculature, skin), causing cysticercosis.
a. T. saginata
b. T. solium
c. T. saginata asiatica
d. Diphyllobothrium latum
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UNIVERSITY OF PUTHISASTRA
Department of Medicine
HOMEWORK
Medical Student Year-4
Academic year 2017 – 2018
55) Dipylidiasis is an infection caused by Dipylidium caninum. D. caninum is a common
intestinal tapeworm of dogs, cats and foxes. However, it occasionally infects also
humans, predominantly children:
a. Beetle
b. Cockroach
c. Flea
d. Snail
56) T. saginata asiatica is closely related to T. saginata, but its metacestodes parasitize
mainly in the livers of :
a. Cattle
b. Dogs
c. Pigs and ruminants
d. Rats and mice
57) Patients, in children, with heavy infection may develop appetite loss, diarrhea,
abdominal discomfort, indigestion and anal pruritus caused by gravid proglottid
migrating out of the anus.
a. Dipylidium caninum
b. Dyphyllobothrium latum
c. Hymenolepis nana
d. Taenia saginata
58) The following main symptoms are to deal with chronic cholangitis: outbreaks of
retention jaundice, violent biliary colic, and a tender hepatomegaly with peripheral
eosinophilia. It is possible evolution to cirrhosis.
a. Echinococcus granulosis
b. Echinococcus multiloculasis
c. Fasciola species
d. Entameba histolytica
59) Diagnosis: by recovery of characteristic gravid segments evacuated in the stool or
migrating from the anus and by observing the egg capsules in the stool.
a. Dipylidium caninum
b. Dyphyllobothrium latum
c. Hymenolepis nana
d. Taenia saginata
60) Gravid proglottids release eggs that are passed in the feces. After ingestion by a
suitable intermediate host, the egg hatches in the small bowel and releases an
oncosphere that penetrates the intestinal wall and migrates through the circulatory
system into various organs
a. Liver
b. Lungs
c. Musculature
d. Liver and lungs
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