BIO205 PARASITE PRACTICAL

BIO205 PARASITE PRACTICAL

Guinea worm

Dracunculus medinensis

Which nematodes are normally parasites of cats and dogs?

Toxocara canis

Toxocaris cati

Dirofilaria immitis

Tissue parasite

Trichinella spiralis

Hookworm

Necator americanus

Giant intestinal roundworm

Ascaris lumbricoides

Which nematode can cause severe anemia? 

necator americanus

Which nematode is found in areas with a high level of sanitation?

Enterobius vermicularis

Pinworm

Enterobius vermicularis

Which nematode(s) is/are transmitted by ingesting undercooked contaminated pork?

Trichinella spiralis

Which nematode(s) is/are transmitted by penetrating through skin?

Necator americanus

Which nematode(s) is/are transmitted by the fecal-oral route?

Ascaris lumbricoides

Toxocara canis

Toxocaris cati

Which nematodes migrate to the lung during their life cycle?

Ascaris lumbricoides

Necator americanus

Dirofilaria immitis

Which nematode causes pruritis ani? 

Enterobius vermicularis

Which nematode(s) is/are transmitted by larvae in soil penetrating foot skin?

Necator americanus

How is this roundworm transmitted to humans?

hand to mouth

Identify this roundworm

Necator americanus ovum

How is this roundworm transmitted to humans?

fecal oral (Ascaris lumbricoides ova)

This parasite is transmitted hand to mouth: T/F

True

How is this roundworm transmitted to humans?

larvae in soil penetrate foot skin (Nector Americanus)

Identify this roundworm

Enterobius vermicularis ovum

Identify this roundworm

Trichinella spiralis larvae

Identify this roundworm

Ascaris lumbricoides ovum

How is this roundworm transmitted to humans?

hand to mouth (Enterobius vermicularis)

Identify this roundworm

Trichinella spiralis larvae

Identify this roundworm

Necator americanus ovum

Identify this roundworm

Necator americanus ovum

This parasite is transmitted by larvae in water penetrating skin: T/F

FALSE

Guinea worm

Dracunculus medinensis

How is this roundworm transmitted to humans?

 contaminated under cooked pork (Trichinella Spiralis)

Identify this roundworm

Ascaris lumbricoides ovum aka giant intestinal roundworm

Identify this roundworm

Enterobius vermicularis ovum

How is this roundworm transmitted to humans?

fecal oral (Ascaris lumbricoides ova aka giant interinal roundworm)

How is this roundworm transmitted to humans?

larvae in soil penetrate foot skin (Necator Americanus aka hookworm)

Giant intestinal roundworm

Necator americanus

This parasite is transmitted by eating contaminated under cooked pork: T/F

TRUE

How is this roundworm transmitted to humans?

eating contaminated under cooked pork

This parasite is transmitted fecal oral: T/F

FALSE

Tissue parasite

Trichinella spiralis

Nematoda are cylindrically shaped, rather than flattened like a piece of paper: T/F

TRUE

Roundworms require development in an intermediate host sometime during their life cycle: T/F

FALSE

Ascaris larvae are swallowed by an infected individual after they have molted in the lungs; T/F

TRUE

Ascaris is an extremely rare infection in humans: T/F

FALSE

The common name for Necator americanus is whipworm: T/F

FALSE

Hookworm larvae can penetrate the soles of human feet, even if the skin is not broken: T/F

TRUE

The diagnosis of pinworms usually relies on finding ova in the feces: T/F

FALSE

Human are rarely infected with Dirofilaria immitis: T/F

TRUE

Consumption of raw or insufficiently cooked pork may lead to trichinosis: T/F

TRUE

Smoked pork sausage cannot contain live Trichinella larvae : T/F

FALSE

Cestoda (tapeworms) are non-segmented: T/F

FALSE

The ova of Taenia solium are distinguishable from those of Taenia saginata: T/F

FALSE

Platyhelminthes are commonly known as..

flatworms

The two classes of platyhelminthes are ______, commonly known as flukes, and _______, commonly known as tapeworms

trematoda & cestoda,

The animal that harbors the adult platyhelminthes is called the _____ host

definitive

The proglottids of Taenia saginata have more than _____ lateral branches on each side of the uterus, while Taenia solium has _____ to _____ branches

fifteen, eight to thirteen

The scolex of Taenia solium is indistinguishable from the scolex of Taenia saginata: T/F

FALSE

Trematodes (flukes) lack a digestive tract of their own: T/F

FALSE

Define monoecious

both sexes occur in a single animal

Name the genus and species of the parasite that causes the disease “cysticercosis”

Taenia solium

Define scolex

head of the worm 

Clonorchis sinensis common name is _____ The first host is a freshwater _____. The seond host is a freshwater _____. Humans are infected by eating contaminated, undercooked freshwater _____

Chinese liver fluke, snail, fish, fish

_____, commonly called the blood fluke. The first host is a _____. The second host is _____. Humans are infected when the cercaria contacts the skin of a person who is in the _____, it secretes enzymes that enable it to burrow through unbroken skin.  

Schistosoma mansoni, snail, humans, water

_____, commonly called beef tapeworm. The first host is a _____. The second host is _____. Humans become infected by eating raw or insufficiently cooked _____.

Taenia saginata, cow, humans, beef

Taenia solium, commonly called _____. The first host is a _____. The second host is _____. Humans get infected by ingesting the larvae when eating raw or undercooked _____.

pork tapeworm, pig, humans, pork

State two reasons why many parasites are NOT found in the United States

sanitary conditions

water treatment

no intermediate host

diet, better cooking methods

we do not use human fertilizer 

Define proglottid 

body segments of the worm

Define dioecious

male and female are separate animals

The proglottids of Taenia saginata have how many lateral branches on each side of the uterus?

15

The proglottids of Taenia solium have how many lateral branches on each side of the uterus?

8-13

Taenia solium is transmitted to humans by contaminated under cooked pork: T/F

TRUE

Name the genus and species of the parasite that causes the disease cysticercosis

Taenia solium

Identify this flatworm

Taenia ovum (tapeworm)

The ova of Taenia solium are distinguishable from those of Taenia saginata: T/F

FALSE

Identify this flatworm

Schistosoma mansoni ovum

Schistosoma mansoni is transmitted to humans by contaminated under cooked beef: T/F

FALSE

How is this flatworm transmitted to humans?

eating contaminated under cooked pork

The two classes of platyhelminthes are _____ & _____

trematoda & cestoda

 Clonorchis sinensis is transmitted to humans by larvae in water penetrating skin: T/F

FALSE

Identify this flatworm

Clonorchis sinensis ovum

How is this flatworm transmitted to humans?

contaminated under cooked fish

Taenia saginata is transmitted to humans fecal oral: T/F

FALSE

How is this flatworm transmitted to humans?

larvae in water penetrating skin

Identify this flatworm

Taenia ovum

Platyhelminthes are commonly known as roundworms: T/F

FALSE

How is this flatworm transmitted to humans?

eating contaminated under cooked beef

How is this flatworm transmitted to humans?

eating contaminated under cooked pork

How is this flatworm transmitted to humans?

eating contaminated under cooked beef

The common name for Taenia solium is "beef tapeworm": T/F

FALSE

Schistosoma infection requires the ingestion of ova contained in contaminated food or water : T/F

FALSE

Members of the phylum Platyhelminthes are flattened, like a piece of paper or a ribbon: T/F

TRUE

Flukes lack a digestive system of their own: T/F 

FALSE

Tapeworms are members of the class Cestoda: T/F

TRUE

Humans are an exmple of a dioecious animal: T/F

TRUE

The intermediate host for Taenia saginata is the cow: T/F

TRUE

Humans can acquire an infection of Taenia solium either by ingesting raw pork or by ingesting ova from the feces of infected human: T/F

TRUE

An enlarged liver can result from a Schistosoma mansoni infection : T/F

TRUE

The ova of Taenia solium and Taenia saginata are indistinguishable from one another: T/F

TRUE

The scolex is the head of a tapeworm: T/F

TRUE

Cysticercosis in human is caused by the ingestion of Taenia soilum ova: T/F

TRUE

The scientific name for the Chinese Liiver Fluke is Clonorchis sinensis: T/F

TRUE

Vaginitis

Trichomonas vaginalis