Trematodes Flashcards
(78 cards)
1
Q
Also known as
A
Flukes
2
Q
Phylum
A
Platylhelminthes
3
Q
Class
A
Trematoda
4
Q
Order
A
Digenea
5
Q
Trematodes are parasites with
A
holes
6
Q
one feature is that this order is that they requires snails/mollusks as their IH
A
Order Digenea
7
Q
Meaning of the word trematode
A
“Body
with holes”
8
Q
Generalities
Appearance
A
flat and leaf-like
except Schistosoma species
9
Q
Schistosoma appearance
A
cylindrical/elongated
10
Q
Type of symetrality
A
bilaterally symmetrical
11
Q
Are trematodes segmented
A
naur
12
Q
non-cellular, outer covering of the
fluke
A
Tegument
13
Q
Tegument may contain:
A
- spines
- tuberculations
14
Q
Type of reproduction
A
monoecious
excepts Schistosoma species
15
Q
refer to protruding structures
present on the surface
A
Tuberculations
16
Q
incomplete alimentary canal meaning
A
they have no anus and
blind intestinal ceca
17
Q
Posess _____ alimentary canal
A
incomplete
18
Q
All possess ___ suckers
A
two
except Heterophyes
19
Q
surround the mouth
suckers
A
Oral Sucker
20
Q
used for
attachment
suckers
A
Ventral Sucker/Acetabulum
21
Q
Exclusive for Heterophyes heterophyes
suckers
A
gonotyl/genital sucker
22
Q
Reproductive organs are ____
A
well-developed
23
Q
Body Cavity
A
Absent
24
Q
absent organ systems:
A
- circulatory
- skeletal
- respiratory
25
Nervous system description
basic/rudimentary
26
Excretory system description
Bilaterally symmetrical
27
serve as their nervous system
ganglion cells
28
Contains the _________ and _________ that removes the waste products
| Excretory system
collecting tubules and capillaries
29
the waste products will terminate ________
| Excretory system
flame cells
30
Eggs are _____- except for Schistosoma species
operculated
31
Egg has a lid-like structure called the
_______
operculum
| Except Schistoma spp.
32
Operculum opens to allow the
_____ to emerge
larva
33
How will Schistosoma larva will emerge by the egg
longitudinally
34
Requires how many IH
2
| except Schistosoma species
35
Since these are members of Order Digenea, the 1st Intermediate Host will always be the
snail
36
The 2nd Intermediate Host:
wide variety of:
- plants
- animals (freshwater fish)
- water plants
- crustaceans
- insects,
- snail
37
Infective stage to humans
metacercaria
| except Schistosoma species
38
metacercaria can be recovered in the ____
2nd IH
39
IS to humans of Schistosoma
cercaria
40
MOT
Ingestion
| except Schistosoma species
41
MOT In Schistosoma
skin
penetration by cercaria
42
# Overview of Fluke Life Cycle
where embryonation
will happen.
| Egg
Freshwater
43
# Overview of Fluke Life Cycle
Can be ________ or _______ once released
| Egg
immature or mature
44
# Overview of Fluke Life Cycle
If the egg is still immature or
unembryonated, the egg must find its way in _________
| Egg
freshwater
45
# Overview of Fluke Life Cycle
Once the egg is already embryonated in freshwater, you would now have the ______.
| Egg
larva
46
# Overview of Fluke Life Cycle
The larva that would immerge from the egg
is called _______
| Egg
miracidium
47
# Overview of Fluke Life Cycle
The first larval stage that will immerge from they egg after _________.
| Miracidium
embryonation
48
# Overview of Fluke Life Cycle
Capable of ________
| Miracidium
swimming
49
# Overview of Fluke Life Cycle
It would swim towards the __________
| Miracidium
1st IH (snail)
50
# 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
sporocyst
51
# Overview of Fluke Life Cycle
Sporocyst would have the Primary sporocyst, which has a _________ sporocyst
| Sporocyst
daughter
52
# Overview of Fluke Life Cycle
_______ structure
| Redia
Sack-like
53
# Overview of Fluke Life Cycle
Would eventually develop to become a ____
| Sporocyst
redia
54
# Overview of Fluke Life Cycle
Comes after the ______ stage.
| Cercaria
redia
55
# Overview of Fluke Life Cycle
This cercaria would now go out of the snail and would now swim towards the ____
| Cercaria
2nd IH
56
# 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
adult worm
57
# Overview of Fluke Life Cycle
In the 2nd IH, it would now become the
_______.
| Cercaria
metacercaria
58
# Overview of Fluke Life Cycle
There may be changes in the:
- Habitat of the parasite
- Whether the eggs are embryonated or immature upon release
59
# Overview of Fluke Life Cycle
there is a different life cycle in the
case of ______.
Schistosoma
60
General Adult Anatomy:
- Suckers
- Esophagus
- Intestinal ceca
- Vitellaria
- Ovary
- Testes
61
# General Adult Anatomy
It can be used for identification and can be described as ______ or _______
| Intestinal ceca
simple or branching
62
# General Adult Anatomy
Branching dendritic structures at the periphery/lateral portion of parasite
Vitellaria
63
# General Adult Anatomy
Vitellaria is necessary for ________
egg shell production
64
# General Adult Anatomy
In most cases, adult fluke have ___ ovary primarily found at the _______ part of the parasite
| Ovary
- one
- anterior
65
# General Adult Anatomy
Testes is usually found at the _______
posterior
66
# Schistosoma Anatomy
Separate male and female parasites
Dioecious
67
# Schistosoma Anatomy
Stout, mas mataba
Male
68
# Schistosoma Anatomy
If found in the blood vessels, the male and female are joint together because they are
constantly _______
copulating
69
# Schistosoma Anatomy
Thinner, slender, longer
Female
70
# Schistosoma Anatomy
Shorter
Male
71
# Schistosoma Anatomy
The part where the female is inserted into the male through the
gynecophoral canal
72
# Schistosoma Anatomy
Has a uterus and ovary
Female
73
# Schistosoma Anatomy
Both have _____ and _____ suckers
oral and ventral
74
# Types of Flukes location
Blood Fluke
Blood Vessels
75
# Types of Flukes location
Liver Flukes
- Liver
- Gallbladder
- bile duct
76
# Types of Flukes location
Intestinal Flukes
Intestinal tract, particularly
small intestine
77
# Schistosoma Anatomy
Has more number _____ compared to the
typical fluke
| Male
testis
78
# Types of Flukes location
Lung Flukes
Lungs
