DIAGNOSTIC PARASITOLOGY: HELMINTHS, FLUKES,
TAPEWORMS, AND NEMATODES |VERIFIED QUESTIONS
AND ANSWERS | 100% ACCURATE, A+ GRADED,
GUARANTEED SUCCESS!
Helminths Answer: Infections in humans caused by flukes, tapeworms, or roundworms.
Modes of transmission Answer: Ways in which helminth infections can be transmitted,
including directly ingesting eggs, ingesting larvae in an intermediate host, or through
direct larval penetration of the skin.
Worm burden Answer: The number of adult worms present in the human body, which is
related to the number of eggs or larvae ingested.
Fasciolopsis buski Answer: Commonly known as the giant intestinal fluke, prevalent in
the Far East and transmitted by ingesting metacercaria on raw aquatic vegetation.
Symptoms of heavy infections (Fasciolopsis buski) Answer: Persistent diarrhea,
anorexia, edema, ascites, nausea, vomiting, or intestinal obstruction.
Adult morphology (Fasciolopsis buski) Answer: Flattened, 2 to 7 cm long, usually not
seen in stool samples.
Egg morphology (Fasciolopsis buski) Answer: Most commonly seen in stool samples,
yellow-brown, 130 to 140 μm by 80 to 85 μm, unembryonated when passed.
Fasciola hepatica Answer: Commonly known as the sheep liver fluke, primarily a
zoonosis that normally affects sheep and causes liver rot.
Transmission (Fasciola hepatica) Answer: Eating raw aquatic vegetation, especially
watercress.
Heavy infection symptoms (Fasciola hepatica) Answer: Diarrhea, upper right quadrant
abdominal pain, hepatomegaly, cirrhosis, and liver obstruction, with resulting jaundice.
Adult morphology (Fasciola hepatica) Answer: Approximately 3 cm long.
1
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, Egg morphology (Fasciola hepatica) Answer: 130 to 150 µm × 60 to 90 µm,
operculated, unembryonated when passed.
Chronic infections (Fasciola hepatica) Answer: Usually asymptomatic.
Eosinophilia Answer: An inflammatory reaction that can occur due to tissue damage
during migration through the liver.
Schistosoma species Answer: Commonly referred to as blood flukes.
Clonorchis sinensis Answer: Commonly known as the oriental liver fluke.
Paragonimus westermani Answer: Commonly known as the lung fluke.
Fasciolopsis buski/Fasciola hepatica eggs Answer: Eggs that are indistinguishable
from each other and reported as such.
Reservoir hosts (Fasciolopsis buski) Answer: Dogs and pigs.
Geographic prevalence (Fasciolopsis buski) Answer: Prevalent in China, Vietnam,
Thailand, Indonesia, Malaysia, and India.
Pathologic consequences Answer: Related to the number of adults present in the body.
Inhabitants of helminths Answer: Most parasites inhabit the intestinal tract but can also
infect the liver, lungs, lymphatics, and blood vessels.
CLONORCHIS SINENSIS Transmission Answer: Ingestion of metacercariae in raw,
undercooked, or pickled fresh-water fish
CLONORCHIS SINENSIS Reservoir Hosts Answer: Dogs and cats are reservoir hosts
CLONORCHIS SINENSIS Symptoms Answer: Light infections, usually asymptomatic;
repeated/heavy infections show inflammation, fever, diarrhea, pain, fibrotic changes, or
obstruction of the bile ducts
CLONORCHIS SINENSIS Adult Morphology Answer: Thin, tapered at both ends, and 1
to 2.5cm long
CLONORCHIS SINENSIS Egg Morphology Answer: 29 to 35μm long, embryonated
when passed, flask-shaped, operculated with prominent shoulders at the operculum,
comma shaped knob at opposite end of operculum
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
TAPEWORMS, AND NEMATODES |VERIFIED QUESTIONS
AND ANSWERS | 100% ACCURATE, A+ GRADED,
GUARANTEED SUCCESS!
Helminths Answer: Infections in humans caused by flukes, tapeworms, or roundworms.
Modes of transmission Answer: Ways in which helminth infections can be transmitted,
including directly ingesting eggs, ingesting larvae in an intermediate host, or through
direct larval penetration of the skin.
Worm burden Answer: The number of adult worms present in the human body, which is
related to the number of eggs or larvae ingested.
Fasciolopsis buski Answer: Commonly known as the giant intestinal fluke, prevalent in
the Far East and transmitted by ingesting metacercaria on raw aquatic vegetation.
Symptoms of heavy infections (Fasciolopsis buski) Answer: Persistent diarrhea,
anorexia, edema, ascites, nausea, vomiting, or intestinal obstruction.
Adult morphology (Fasciolopsis buski) Answer: Flattened, 2 to 7 cm long, usually not
seen in stool samples.
Egg morphology (Fasciolopsis buski) Answer: Most commonly seen in stool samples,
yellow-brown, 130 to 140 μm by 80 to 85 μm, unembryonated when passed.
Fasciola hepatica Answer: Commonly known as the sheep liver fluke, primarily a
zoonosis that normally affects sheep and causes liver rot.
Transmission (Fasciola hepatica) Answer: Eating raw aquatic vegetation, especially
watercress.
Heavy infection symptoms (Fasciola hepatica) Answer: Diarrhea, upper right quadrant
abdominal pain, hepatomegaly, cirrhosis, and liver obstruction, with resulting jaundice.
Adult morphology (Fasciola hepatica) Answer: Approximately 3 cm long.
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
, Egg morphology (Fasciola hepatica) Answer: 130 to 150 µm × 60 to 90 µm,
operculated, unembryonated when passed.
Chronic infections (Fasciola hepatica) Answer: Usually asymptomatic.
Eosinophilia Answer: An inflammatory reaction that can occur due to tissue damage
during migration through the liver.
Schistosoma species Answer: Commonly referred to as blood flukes.
Clonorchis sinensis Answer: Commonly known as the oriental liver fluke.
Paragonimus westermani Answer: Commonly known as the lung fluke.
Fasciolopsis buski/Fasciola hepatica eggs Answer: Eggs that are indistinguishable
from each other and reported as such.
Reservoir hosts (Fasciolopsis buski) Answer: Dogs and pigs.
Geographic prevalence (Fasciolopsis buski) Answer: Prevalent in China, Vietnam,
Thailand, Indonesia, Malaysia, and India.
Pathologic consequences Answer: Related to the number of adults present in the body.
Inhabitants of helminths Answer: Most parasites inhabit the intestinal tract but can also
infect the liver, lungs, lymphatics, and blood vessels.
CLONORCHIS SINENSIS Transmission Answer: Ingestion of metacercariae in raw,
undercooked, or pickled fresh-water fish
CLONORCHIS SINENSIS Reservoir Hosts Answer: Dogs and cats are reservoir hosts
CLONORCHIS SINENSIS Symptoms Answer: Light infections, usually asymptomatic;
repeated/heavy infections show inflammation, fever, diarrhea, pain, fibrotic changes, or
obstruction of the bile ducts
CLONORCHIS SINENSIS Adult Morphology Answer: Thin, tapered at both ends, and 1
to 2.5cm long
CLONORCHIS SINENSIS Egg Morphology Answer: 29 to 35μm long, embryonated
when passed, flask-shaped, operculated with prominent shoulders at the operculum,
comma shaped knob at opposite end of operculum
2
APPHIA - Crafted with Care and Precision for Academic Excellence.
