17 Questions
What is the primary difference between the eggs of Fasciola hepatica and Paramphistomum spp.?
No difference, they are similar
What is the distinctive feature of the anterior end of Fasciola hepatica?
A cephalic cone
Which stage of the trematode life cycle is the infective stage?
The Metacercaria
What is the common name of the parasite Paramphistomum spp.?
Rumen fluke
How many stages are there in the life cycle of trematodes?
5 stages
What is the characteristic shape of the adult Paramphistomum spp.?
Conical and plump
What is the primary purpose of the sedimentation technique in faecal sample analysis?
To detect trematode eggs in faeces
What is the role of formalin in the formalin-ether sedimentation procedure?
To preserve the trematode eggs
What is the characteristic of trematodes that allows them to be detected using the sedimentation technique?
Their ability to sink rapidly in water
Which of the following is a characteristic of common trematodes?
Unsegmented helminths
What is the purpose of adding ether to the mixture in the formalin-ether sedimentation procedure?
To facilitate the sedimentation of eggs
What is the reproductive characteristic of trematodes, except for Schistosomes?
Hermaphroditic
What is the typical length of a Fascioloides magna egg?
170 um
What is unique about the Schistosoma haematobium egg?
It has a prominent terminal spine at the posterior end
Where are Dicrocoelium dendriticum flukes typically found?
In the bile ducts
What is a characteristic of Schistosoma japonicum eggs?
The description is not provided in the text
What is the typical size of an adult hepatica?
5 x 2.5 x 4.5 cm
Learn about the sedimentation technique used to detect trematode eggs in faecal samples. This method is based on the principle that trematode eggs are too large and heavy to float in flotation fluids. Understand the procedure and principles of faecal sedimentation and formalin-ether sedimentation.
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