Cestodes (Tapeworms) Characteristics

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Questions and Answers

Where does the Taenia solium tapeworm primarily infect humans?

Liver

Stomach

Small intestine (correct)

Large intestine

What is the common name for Taenia saginata?

Beef tapeworm (correct)

Broad tapeworm

Pork tapeworm

Dwarf tapeworm

Which tapeworm species is primarily transmitted through the ingestion of improperly cooked fish?

Taenia solium

Hymenolepis nana

Taenia saginata

Diphyllobothrium latum (correct)

Which tapeworm species has an ovoid scolex with 4 suckers and 2 rostellum of large and small hooks?

Taenia solium Signup and view all the answers

In which part of the human body does the Hymenolepis nana tapeworm primarily reside?

Small intestine Signup and view all the answers

What is the diagnostic stage of the Hydatid cyst tapeworm?

Diagnostic stage gravid mature Signup and view all the answers

How many hooks does the oncosphere have?

Six hooks Signup and view all the answers

Which tapeworm is known as the Double Pored Tapeworm?

Cucumber Tapeworm Signup and view all the answers

What is the size of the egg of Echinococcus granulosus?

60 x 80 um Signup and view all the answers

Which tapeworm is ingested from dog feces?

Hyper Tapeworm Signup and view all the answers

What is the shape of the egg containing an oncosphere with 6 hooklets?

Spheroidal Signup and view all the answers

Which tapeworm has proglottids with a sac-like uterus filled with eggs?

Double Pored Tapeworm Signup and view all the answers

What is the shape of Clonorchis sinensis eggs?

Flat-shaped operculum resting on a ring with a small knob on the posterior end Signup and view all the answers

What is the length range of adult Schistosoma japonicum females?

26 mm Signup and view all the answers

What is the mode of transmission for Paragonimus westermani?

Ingestion of infective stage in inadequately cooked prickled crustaceans Signup and view all the answers

What is the final habitat of adult Schistosoma mansoni?

Inferior Mesenteric Veins of the lower colon Signup and view all the answers

What is the shape of Paragonimus westermani eggs?

Ovoid egg-shaped; with a rust-brown color; subterminal oral sucker Signup and view all the answers

What is the length range of adult Fasciolopsis buski?

10-20 mm Signup and view all the answers

What is the mode of transmission for Schistosoma mansoni?

Skin penetration Signup and view all the answers

What is the shape of Schistosoma haematobium eggs?

Elliptical non-operculated & large terminal spine; oval non-operculated; elongated and spindle-shaped Signup and view all the answers

What is the length range of adult Dipylidium caninum?

20-660 cm Signup and view all the answers

What is the mode of transmission for Clonorchis sinensis?

Ingestion of infective stage in undercooked or uncooked freshwater fish Signup and view all the answers

Study Notes

Tapeworm Infections and Characteristics

Taenia solium primarily infects humans in the intestines.
Taenia saginata is commonly known as the Beef Tapeworm.
Diphyllobothrium latum is the tapeworm species transmitted through improperly cooked fish.
Taenia solium has an ovoid scolex with four suckers and two rostellum containing large and small hooks.

Tapeworm Locations and Lifecycle

Hymenolepis nana primarily resides in the small intestine of humans.
The diagnostic stage of the Hydatid cyst tapeworm is found in the larval stage within cysts.
The oncosphere of certain tapeworms has six hooks.

Tapeworm Egg and Structure

The Double Pored Tapeworm refers to Dipylidium caninum.
Echinococcus granulosus eggs measure about 30 to 40 micrometers in diameter.
The shape of the egg containing an oncosphere with six hooklets is spherical.
Certain tapeworms, like Taenia saginata, have proglottids with a sac-like uterus packed with eggs.

Fluke and Schistosoma Characteristics

Clonorchis sinensis eggs are oval-shaped and have a distinct operculum.
Adult female Schistosoma japonicum ranges from 8 to 13 mm in length.
Paragonimus westermani is transmitted via the consumption of raw or undercooked crustaceans.
Adult Schistosoma mansoni primarily inhabit the human mesenteric veins.

Egg Morphology and Transmission

Paragonimus westermani eggs are oval and have a thick shell with a characteristic operculum.
Adult Fasciolopsis buski ranges from 20 to 75 mm in length.
Schistosoma mansoni is transmitted through contact with contaminated water containing cercariae.
Schistosoma haematobium eggs are oval and have a terminal spine.
Adult Dipylidium caninum measures approximately 10 to 20 cm in length.
Clonorchis sinensis is transmitted through ingestion of raw or pickled freshwater fish.

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Description

Learn about the characteristics, habitat, mode of transmission, and morphology of Taenia saginata and Taenia solium tapeworms. Understand their life cycle and differences in morphology between egg and adult stages.