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Taeniidae Family: Tapeworms and Hydatid Cysts

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Taeniidae Family: Tapeworms and Hydatid Cysts

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Questions and Answers

What is the characteristic feature of the scolex of Diphyllobothrium latum?

Two longitudinal grooves (correct)

Four prominent suckers

A single longitudinal groove

A conical retractile rostellum

What is the shape of the uterus in Diphyllobothrium latum?

Branched convoluted

Unbranched convoluted (correct)

Tubular

Rosette-shaped

What is the size of the gravid segments of Dipylidium caninum?

Pea-sized

Bean-sized

Lentil-sized

Rice grain-sized (correct)

What is the characteristic shape of the body of cestodes?

Flattened dorsoventrally (C) Signup and view all the answers

Which of the following orders of Cestodes infects animals and is of significance to veterinary medicine?

Diphyllobothriidea and Cyclophyllidea (D) Signup and view all the answers

What is the characteristic feature of the eggs of Diphyllobothrium latum?

All of the above (D) Signup and view all the answers

What is the function of the scolex in tapeworms?

Anterior attachment and holdfast (A) Signup and view all the answers

Which of the following is NOT a type of proglottid?

Ventricular segment (C) Signup and view all the answers

What is the length of the adult worm of Dipylidium caninum in the intestine?

10-70 cm (B) Signup and view all the answers

What is the specific gravity of the sodium nitrate solution?

1.18 (C) Signup and view all the answers

What is the role of the neck in the anatomy of tapeworms?

Germinal region from which the strobila arises (D) Signup and view all the answers

How many parts does the adult tapeworm consist of?

Three (C) Signup and view all the answers

What is the characteristic of the scolex of Echinococcus granulosus?

It has a prominent rostellum with two rows of hooklets (B) Signup and view all the answers

What is the number of proglottides in Echinococcus granulosus?

Three (D) Signup and view all the answers

What is the typical location of the metacestode of Echinococcus granulosus in the intermediate host?

Liver, lungs (B) Signup and view all the answers

What is the characteristic of the eggs of Taenia spp.?

They have a radially-striated internal oncosphere with six refractile hooks (D) Signup and view all the answers

Which of the following tapeworms has an invaginated scolex with a rostellum and hooks?

Cysticercus cellulosae (D) Signup and view all the answers

What is the maximum length of the adult Taenia pisiformis worm?

Up to 20 m (D) Signup and view all the answers