Podcast
Questions and Answers
What is the effect of high specific gravity on trophozoites?
What is the effect of high specific gravity on trophozoites?
Why is the flotation technique not useful for heavier eggs?
Why is the flotation technique not useful for heavier eggs?
What happens to protozoan cysts and thin-walled nematode eggs if they are left in the solution for more than 20 minutes?
What happens to protozoan cysts and thin-walled nematode eggs if they are left in the solution for more than 20 minutes?
What is the characteristic of H. nana eggs that makes them susceptible to distortion by high specific gravity?
What is the characteristic of H. nana eggs that makes them susceptible to distortion by high specific gravity?
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What is the primary reason for recommending the formalin-ethyl acetate sedimentation technique?
What is the primary reason for recommending the formalin-ethyl acetate sedimentation technique?
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What is the consequence of leaving protozoan cysts and thin-walled nematode eggs in the solution for an extended period?
What is the consequence of leaving protozoan cysts and thin-walled nematode eggs in the solution for an extended period?
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What is the limitation of the flotation technique in parasitology?
What is the limitation of the flotation technique in parasitology?
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Why is the specific gravity of the solution important to consider in concentration procedures?
Why is the specific gravity of the solution important to consider in concentration procedures?
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What is the common consequence of using a solution with high specific gravity in concentration procedures?
What is the common consequence of using a solution with high specific gravity in concentration procedures?
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Study Notes
Concentration Techniques for Parasite Eggs
- High specific gravity of solution can kill trophozoites and distort certain fragile eggs, such as H. nana.
- Formalin-ethyl acetate sedimentation technique is recommended as a single concentration procedure.
- Leaving samples for more than 20 minutes can cause protozoan cysts and thin-walled nematode eggs to collapse and become distorted due to high specific gravity.
- Flotation technique is not suitable for heavier eggs that do not float in the salt solution.
- High specific gravity of solution can cause damage to certain parasite eggs and structures.
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Description
This quiz covers the principles and limitations of different concentration techniques used in parasitology, including formalin-ethyl acetate sedimentation and flotation techniques. It's essential for understanding the detection and identification of parasites and their eggs. Learn about the effects of specific gravity on different types of eggs and protozoan cysts.
