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Parasitology lec > Trematodes > Flashcards

Trematodes Flashcards

1
Q

Also known as

A

Flukes

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2
Q

Phylum

A

Platylhelminthes

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3
Q

Class

A

Trematoda

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4
Q

Order

A

Digenea

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5
Q

Trematodes are parasites with

A

holes

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6
Q

one feature is that this order is that they requires snails/mollusks as their IH

A

Order Digenea

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7
Q

Meaning of the word trematode

A

“Body
with holes”

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8
Q

Generalities

Appearance

A

flat and leaf-like

except Schistosoma species

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9
Q

Schistosoma appearance

A

cylindrical/elongated

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10
Q

Type of symetrality

A

bilaterally symmetrical

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11
Q

Are trematodes segmented

A

naur

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12
Q

non-cellular, outer covering of the
fluke

A

Tegument

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13
Q

Tegument may contain:

A
  • spines
  • tuberculations
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14
Q

Type of reproduction

A

monoecious

excepts Schistosoma species

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15
Q

refer to protruding structures
present on the surface

A

Tuberculations

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16
Q

incomplete alimentary canal meaning

A

they have no anus and
blind intestinal ceca

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17
Q

Posess _____ alimentary canal

A

incomplete

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18
Q

All possess ___ suckers

A

two

except Heterophyes

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19
Q

surround the mouth

suckers

A

Oral Sucker

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20
Q

used for
attachment

suckers

A

Ventral Sucker/Acetabulum

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21
Q

Exclusive for Heterophyes heterophyes

suckers

A

gonotyl/genital sucker

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22
Q

Reproductive organs are ____

A

well-developed

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23
Q

Body Cavity

A

Absent

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24
Q

absent organ systems:

A
  • circulatory
  • skeletal
  • respiratory
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25
Q

Nervous system description

A

basic/rudimentary

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26
Q

Excretory system description

A

Bilaterally symmetrical

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27
Q

serve as their nervous system

A

ganglion cells

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28
Q

Contains the _________ and _________ that removes the waste products

Excretory system

A

collecting tubules and capillaries

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29
Q

the waste products will terminate ________

Excretory system

A

flame cells

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30
Q

Eggs are _____- except for Schistosoma species

A

operculated

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31
Q

Egg has a lid-like structure called the
_______

A

operculum

Except Schistoma spp.

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32
Q

Operculum opens to allow the
_____ to emerge

33
Q

How will Schistosoma larva will emerge by the egg

A

longitudinally

34
Q

Requires how many IH

A

2

except Schistosoma species

35
Q

Since these are members of Order Digenea, the 1st Intermediate Host will always be the

36
Q

The 2nd Intermediate Host:

A

wide variety of:
- plants
- animals (freshwater fish)
- water plants
- crustaceans
- insects,
- snail

37
Q

Infective stage to humans

A

metacercaria

except Schistosoma species

38
Q

metacercaria can be recovered in the ____

39
Q

IS to humans of Schistosoma

40
Q

MOT

A

Ingestion

except Schistosoma species

41
Q

MOT In Schistosoma

A

skin
penetration by cercaria

42
Q

Overview of Fluke Life Cycle

where embryonation
will happen.

Egg

A

Freshwater

43
Q

Overview of Fluke Life Cycle

Can be ________ or _______ once released

Egg

A

immature or mature

44
Q

Overview of Fluke Life Cycle

If the egg is still immature or
unembryonated, the egg must find its way in _________

Egg

A

freshwater

45
Q

Overview of Fluke Life Cycle

Once the egg is already embryonated in freshwater, you would now have the ______.

Egg

46
Q

Overview of Fluke Life Cycle

The larva that would immerge from the egg
is called _______

Egg

A

miracidium

47
Q

Overview of Fluke Life Cycle

The first larval stage that will immerge from they egg after _________.

Miracidium

A

embryonation

48
Q

Overview of Fluke Life Cycle

Capable of ________

Miracidium

49
Q

Overview of Fluke Life Cycle

It would swim towards the __________

Miracidium

A

1st IH (snail)

50
Q

Overview of Fluke Life Cycle

Once inside the snail, the miracidium would penetrate it and inside the snail, the miracidium would now become a _________

Miracidium

51
Q

Overview of Fluke Life Cycle

Sporocyst would have the Primary sporocyst, which has a _________ sporocyst

Sporocyst

52
Q

Overview of Fluke Life Cycle

_______ structure

Redia

53
Q

Overview of Fluke Life Cycle

Would eventually develop to become a ____

Sporocyst

54
Q

Overview of Fluke Life Cycle

Comes after the ______ stage.

Cercaria

55
Q

Overview of Fluke Life Cycle

This cercaria would now go out of the snail and would now swim towards the ____

Cercaria

56
Q

Overview of Fluke Life Cycle

Eventually, if humans ingest this 2nd IH containing the metacercaria, it would then
become an ________ in that human host.

Metacercaria

A

adult worm

57
Q

Overview of Fluke Life Cycle

In the 2nd IH, it would now become the
_______.

Cercaria

A

metacercaria

58
Q

Overview of Fluke Life Cycle

There may be changes in the:

A
  • Habitat of the parasite
  • Whether the eggs are embryonated or immature upon release
59
Q

Overview of Fluke Life Cycle

there is a different life cycle in the
case of ______.

A

Schistosoma

60
Q

General Adult Anatomy:

A
  • Suckers
  • Esophagus
  • Intestinal ceca
  • Vitellaria
  • Ovary
  • Testes
61
Q

General Adult Anatomy

It can be used for identification and can be described as ______ or _______

Intestinal ceca

A

simple or branching

62
Q

General Adult Anatomy

Branching dendritic structures at the periphery/lateral portion of parasite

A

Vitellaria

63
Q

General Adult Anatomy

Vitellaria is necessary for ________

A

egg shell production

64
Q

General Adult Anatomy

In most cases, adult fluke have ___ ovary primarily found at the _______ part of the parasite

Ovary

A
  • one
  • anterior
65
Q

General Adult Anatomy

Testes is usually found at the _______

66
Q

Schistosoma Anatomy

Separate male and female parasites

67
Q

Schistosoma Anatomy

Stout, mas mataba

68
Q

Schistosoma Anatomy

If found in the blood vessels, the male and female are joint together because they are
constantly _______

A

copulating

69
Q

Schistosoma Anatomy

Thinner, slender, longer

70
Q

Schistosoma Anatomy

Shorter

71
Q

Schistosoma Anatomy

The part where the female is inserted into the male through the

A

gynecophoral canal

72
Q

Schistosoma Anatomy

Has a uterus and ovary

73
Q

Schistosoma Anatomy

Both have _____ and _____ suckers

A

oral and ventral

74
Q

Types of Flukes location

Blood Fluke

A

Blood Vessels

75
Q

Types of Flukes location

Liver Flukes

A
  • Liver
  • Gallbladder
  • bile duct
76
Q

Types of Flukes location

Intestinal Flukes

A

Intestinal tract, particularly
small intestine

77
Q

Schistosoma Anatomy

Has more number _____ compared to the
typical fluke

Male

78
Q

Types of Flukes location

Lung Flukes

Parasitology lec (24 decks)

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