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Zoology 352 Labs 1-3 > Lab 1-Schistosoma > Flashcards

Lab 1-Schistosoma Flashcards

1
Q

Kingdom of Schistosoma?

A

Protozoa

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2
Q

Subkingdom of Schistosoma?

A

Eumatozoa

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3
Q

Phylum of Schistosoma?

A

Platyhelminthes

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4
Q

Dioecious

A

Contains different sexes

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5
Q

Why is Schistosoma an unusual fluke?

A

It is dioecious

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6
Q

Where do they live in mammals?

A

copula (narrow part) of vasculatures

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7
Q

What is its intermediate host?

A

Snail

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8
Q

What form of the Schistosoma (or life stage) does it exit the direct host?

A

As eggs laid by females

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9
Q

How are the eggs released into the water from human body?

A

Eggs are released into tissues and are sent to bladder or intestine to be voided out through urine or feces

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10
Q

How do the eggs hatch

A

By contacting water

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11
Q

Miracidium

A

ciliated larvae of Schistosoma that hatches from the egg

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12
Q

How long does a miracidium have to find a snail host before it dies?

A

A few hours

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13
Q

How does miracidium locate snails?

A

Chemotaxis

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14
Q

Cercariae

A
  • free-living larval stage of Schistosoma, usu. possessing a tail
  • developed from germ balls in daughter sporocyst
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15
Q

Class of Schistosoma?

A

Digenea

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16
Q

Where does the mother sporocyst develop in the snail?

A

Near the site of infection

17
Q

Where do daughter sporocysts go to develop cercariae?

A

to the gonads

18
Q

Where do daughter sporocysts go to develop cercariae?

A

to the gonads of snail

19
Q

Where do cercariae migrate after leaving daughter sporocyst?

A

to the snail mantle cavity

20
Q

How does cercariae know when to leave snail?

A

it leaves at certain times of day that people/other hosts are out

21
Q

Schistosomulae

A

Migratory stage between cercariae and adult schistosomes

22
Q

Where do schistosomula grow and mature?

A

liver

23
Q

Do schistosomes have 2 separate sexes?

A

yes

24
Q

Where is the reproductive system restricted to in the body of adult male schistosoma?

A

anterior portion

Zoology 352 Labs 1-3 (17 decks)

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