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Strongyloides stercoralis: Parasitology Quiz

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Strongyloides stercoralis: Parasitology Quiz

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Questions and Answers

What is the habitat of the Strongyloides stercoralis in humans?

Buccal cavity

Intestine

Esophagus

Duodenum (correct)

What is the characteristic of the ova of Strongyloides stercoralis?

Thick-shelled and opaque

Small and elliptical

Thin-shelled and transparent (correct)

Large and oval

In which stage of the life cycle of Strongyloides stercoralis is the infective stage?

Filariform (correct)

Rhabditiform

Ova

Genital primordium

What is the primary method of diagnosis of Strongyloides stercoralis?

Recovery and identification of rhabditiform larvae in feces Signup and view all the answers

What is the characteristic of the larvae of Strongyloides stercoralis in feces?

Similar to hookworm larvae Signup and view all the answers

What is the main habitat of Strongyloides stercoralis in humans?

Duodenum Signup and view all the answers

What is the characteristic feature of the parasitic adult female Strongyloides stercoralis?

Parthenogenetic Signup and view all the answers

What is the morphology of the free-living female Strongyloides stercoralis?

Shorter esophagus Signup and view all the answers

Which stage of Strongyloides stercoralis is non-feeding?

Filariform Signup and view all the answers

What is the characteristic feature of the free-living male Strongyloides stercoralis?

Larger buccal cavity Signup and view all the answers

What is the infective stage of Strongyloides stercoralis?

Filariform Signup and view all the answers

What is the distinctive feature of the parasitic adult Strongyloides stercoralis?

Presence of chitinous, leaf-like processes Signup and view all the answers

What is the primary mode of transmission of Anisakis species to humans?

Through the ingestion of infected crustaceans or fish Signup and view all the answers

What is the infective stage of Anisakis species that is ingested by humans?

Filariform larva Signup and view all the answers

What is the purpose of freezing the fish at -20°C for 24 hours?

To kill the Anisakis larvae in the fish Signup and view all the answers

What is the stage of Anisakis species that develops in the vector?

Larval stage Signup and view all the answers

What is the purpose of evisceration of fish soon after catch?

To remove the Anisakis larvae from the fish Signup and view all the answers

What is the characteristic feature of the larval stage of Anisakis species?

Inconspicuous buccal cavity Signup and view all the answers