Filariae Overview and Life Cycle

What are the two known morphologic forms of the filariae?

What is the name given to the delicate transparent covering found around some microfilariae?

What is the name of the fleshy extension of the scolex known as a rostellum present in some tapeworms?

The ______ is the name given to the group of individual segments that make up the body of a tapeworm.

What is a zoonosis?

Which of the following parasites exhibits nocturnal periodicity?

What is the most common laboratory diagnostic method for identifying filariae?

What is the name given to the swelling of the lower extremities caused by the obstruction of the lymphatic system?

What is the name given to the swelling of the subcutaneous tissues known as Calabar swellings?

Which of the following is the most important drug used for treating filariasis?

The vector for Wuchereria bancrofti is the Culex mosquito.

Which of the following filarial nematodes is most commonly found in the subtropical and tropical areas of the world?

Which of the following filarial nematodes is known as the Malayan filaria?

The adult worms of Brugia malayi are typically larger than the adult worms of Wuchereria bancrofti.

What is the common name for Loa loa?

What is the name of the disease caused by Loa loa?

The adult worms of Loa loa typically reside in the lymphatic system.

Which of the following filarial nematodes is the most important cause of river blindness?

The microfilariae of Onchocerca volvulus exhibit nocturnal periodicity.

The adults filariae of Onchocerca volvulus typically are found inside the lymphatic system.

What is the name of the vector that transmits Onchocerca volvulus?

The microfilariae of Mansonella ozzardi are characterized by the presence of a sheath.

Mansonella ozzardi is a common cause of severe disease in humans.

Which of the following drugs can be used to treat Mansonella ozzardi infection?

The microfilariae of Mansonella perstans are characterized by the presence of a sheath.

Mansonella perstans is a common cause of severe disease in humans.

Which of the following drugs is the most effective treatment for Mansonella perstans infection?

What is the name of the insect that acts as the vector for both Mansonella ozzardi and Mansonella perstans?

What is the name given to the larval stage of a tapeworm that is characterized by the presence of six hooklets?

Which of the following is NOT a characteristic of a tapeworm?

What is the name given to the anterior end of a tapeworm, which is often equipped with suckers and a rostellum?

What is the name given to the individual segments that make up the body of a tapeworm?

Taenia saginata is a zoonotic parasite.

What is the name given to the larva of Taenia solium that is found in the muscle tissue of pigs?

What is the commonly used treatment for Taenia saginata and Taenia solium infection?

Taenia saginata is characterized by a rostellum that has a double crown of hooks.

What is the name given to the condition caused by infection with Taenia saginata?

Hymenolepis diminuta is an intestinal parasite of humans.

Hymenolepis nana is characterized by the presence of an armed rostellum with hooks, while Hymenolepis diminuta has a rostellum that lacks hooks.

Hymenolepis nana is the most common tapeworm in humans.

What is the name given to the larval stage of Hymenolepis diminuta?

Dipylidium caninum is also called the dog or cat tapeworm.

What is the name given to the small, club-shaped armed rostellum found on the scolex of Dipylidium caninum?

What is the name given to the egg packets of Dipylidium caninum?

Diphyllobothrium latum is a zoonotic parasite.

The eggs of Diphyllobothrium latum contain a hexacanth embryo.

What is the name given to the larval stage of Diphyllobothrium latum that develops in the muscle tissue of freshwater fish?

What is the common name for the larval stage of Diphyllobothrium latum that develops in the copepod?

What is the name of the condition caused by infection with Diphyllobothrium latum?

Echinococcus granulosus is the most common cause of hydatid disease in humans.

The eggs of Echinococcus granulosus are identical to the eggs of Taenia saginata.

What is the name given to the fluid-filled sac that develops in the tissues of humans infected with Echinococcus granulosus?

What is the name given to the structures that develop within the brood capsules of a hydatid cyst?

Echinococcus granulosus is typically found in humans.

Which of the following is the most effective treatment for a hydatid cyst?

Echinococcus multilocularis is a common parasite of humans.

The larval stage of Echinococcus granulosus is typically found in the brain, eyes, or other tissues.

The adult worms of Echinococcus granulosus are typically found in muscle tissue.

What is the name of the cyst that develops within a hydatid cyst?

The scolices within a cyst are capable of developing into adult worms when they are ingested by a definitive host.

The eggs of Echinococcus granulosus are typically passed in the feces of humans.

The eggs of Echinococcus granulosus can sometimes be found in the muscle tissue of sheep.

The adult worms of Echinococcus granulosus have a rostellum with hooks.