The last flat worm and all tapeworms

Question 0

What are the lives of schistosomas like?

Answer 0

females lay 3000 eggs a day
eggs got into fresh water and hatch
they infect the larva of snails
they can then penetrate the skin of a vertebrate host

Question 1

The last of the trematoda is the schistosome. What are the three subspecies?

Answer 1

Schistosoma mansoni
schistosoma haematobium
schistosoma japonicum

Question 2

what causes swimmers itch?

Answer 2

Cercaria(free swimming larva stage) of snails that are infected with schistosoma that penetrate the skin

Question 3

What is another name for tape worms?

Answer 3

Cestoda

Question 4

What are the 4 types of cestoda?

Answer 4

1 Taenia saginata
2 Taenia solium
3 Diphyllobothrium latum
4 Echinococcus granulosus

Question 5

What is the life cycle of taenia saginata?

Answer 5

consumed by cattle in contaminated feed
eggs hatch and migrate to muscle
larva encyst in the muscle

Question 6

Patholgy of taenia saginata ?

Answer 6

produces only mild symptoms

most striking feature is the passing of proglottids(the segment of a tape worm)

Question 7

The 2nd type of tape worm is?

Answer 7

Taenia solium

Question 8

What is a notable feature of taenia solium?

Answer 8

The kind of from a bladder thing in the infected individual…they have come to be known as bladder worms

Question 9

Cysticerci?

Answer 9

That is the name of the infection by taenia solium tapeworms

Question 10

What are the pathologies of taenia solium?

Answer 10

The cysticerci can develop in the brain or eye. this can cause meningitis, visual disturbances, and acute inflammation

Question 11

The third cestoda is???

Answer 11

Diphyllobothrium latum

Question 12

What is the life cycle of diphyllobothrium latum?

Answer 12

eggs are eliminated in feces
they hatch in water
and the larva are called coracidium
these work their way into fish muscle

Question 13

how do you get diphyllobothrium latum?

Answer 13

by eating undercooked fish

Question 14

What pathologies are associated with diphyllobothrium latum?

Answer 14

The infection can last for decades
most are asymptomatic
manifestations are discomfort, diahrrea, vomiting and weight loss
Tapeworms absorb large amounts of B12 so you may become deficient

Question 15

The final worm of the day…cestoda 4 is?

Answer 15

Echinococcus granulosus

Question 16

What is the life cycle of Echinococcus granulosus?

Answer 16

Adult worms infect canines and release eggs in small intestine
Humans are accidental hosts and get it from coming into contacted with an infected dog

Question 17

What are the pathologies of Echinococcus granulosus?

Answer 17

Remains silents for years as the cycts enlarge on the organs eventually resulting in abdominal pain and a large mass in the hepatic area
pulmonary involvement can produce chest pain and a cough