Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Parasitology [LEC] > Module 4 > Flashcards

Module 4 Flashcards

1
Q

● Cylindrical in shape Has a complete alimentary canal

A

NEMATODA
Roundworms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

● sexes are separate Either free-living or parasitic

A

NEMATODA
Diecious

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

● they possess a false coelom

A

NEMATODA
Pseudocoelomates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

● Flattened dorsoventrally in shape

A

PLATYHELMINTHES
Flatworms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Absent digestive system

A

PLATYHELMINTHES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Monoecious (Cestodes, Monoecious flukes)
Diecious (Blood flukes - [?] spp)

A

PLATYHELMINTHES
Schistosoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Strictly parasitic

A

PLATYHELMINTHES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

● Coelom (body cavity) is absent.

A

PLATYHELMINTHES
Acoelomates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

requiring more than 1 host in their life cycle, except Hymenolepis nana which may complete its lifecycle in 1 host.

A

heteroxeneous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

require 3 hosts (a definite host and 2 intermediate hosts — first intermediate host, and second intermediate host) to complete their lifecycle. And consist of 3 larval stages

A

pseudophyllids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

require 2 hosts (a definite host and an intermediate host), and consist of 2 larval stages

A

cyclophyllids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The life cycle of cestodes consists of four developmental stages:

A

○Egg
○Oncosphere
○Metacestode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

●The ciliated oncosphore of pseudophyllids is termed

A

Coracidium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

do not possess cilia

A

oncosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The hexacanth embryo develops into a [?] that becomes encysted in extra intestinal sites of the intermediate host.

A

metacestode larva

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

It already contains scolex.

A

metacestode larva

17
Q

■Depending on the species, larval stages of cestodes may be described as either

A

solid or bladder-type

18
Q

1.Pseudophyllidean pattern

A

a.Solid larva
b.Procercoid
c.Plerocercoid or Sparganum

19
Q

2.Cyclophyllidean pattern

A

a.Cystic/Bladder larva/worm
b.Cysticercoid

20
Q

Metacestodes

A

1.Pseudophyllidean pattern
2.Cyclophyllidean pattern
3.Cysticercus
4.Coenurus
5.Yep

21
Q

has a fully developed cyst wall containinga single invaginated scolex. The hollow cavity is filled with f luid thus, it is called a true “bladder worm”; seen among Taenia species

A

3.Cysticercus

22
Q

multiple scolices developed from the innergerminal wall; seen in Multiceps multiceps.

A

4.Coenurus

23
Q

germinal layer may produce many scolices anddevelop many daughter bladders (or brood capsules), each of which, in turn, produces many protoscolices internally; seen in Echinococcus species.

A

5.Yep

24
Q

characterized by absence of body cavity

A

a.Solid larva

25
Q

solid, relatively globular, with the scolex invaginated into the body of the larva

A

b.Procercoid

26
Q

solid, elongated, with the head free or invaginated only into the neck

A

c.Plerocercoid or Sparganum

27
Q
  • characterized by a body cavity that may or may not be well-developed and containing fluid
A

a.Cystic/Bladder larva/worm

28
Q

a.Cystic/Bladder larva/worm - characterized by a body cavity that may or may not be well-developed and containing fluid b.Cysticercoid- not well-developed, with a rather small body anteriorly, into which the scolex is invaginated, and frequently with solid, elongated caudal portion; seen among Hymenolepis species and Dypilidium caninum

A
29
Q
  • not well-developed, with a rather small body anteriorly, into which the scolex is invaginated, and frequently with solid, elongated caudal portion; seen among Hymenolepis species and Dypilidium caninum
A

b.Cysticercoid

30
Q

○Among the pseudophyllids, the immature eggs embryonate and release the [?] in water which are ingested by its first intermediate host.

A

oncospheres (coracidia)

31
Q

○Within the first intermediate host the coracidium develops into a .

A

procercoid

32
Q

○The first intermediate host is ingested by the second intermediate host where the procercoid develops into a

A

plerocercoid larva

33
Q

■The definitive host becomes infected by ingestion of the intermediate host’s flesh containing the [?]. The [?] attaches into the intestinal mucosa, strobilates and develops into the adult worm. Eggs from the [?] are then passed in feces.

A

metacestode larva
metacestode scolex
gravid proglottids

34
Q

■The [?] are mature, thus are readily infective but hatch only after ingestion by intermediate host. Hatching of the eggs will release the [?] which migrate to extra intestinal sites and become a [?], which may be [?], depending on the species.

A

cyclophyllidean eggs
oncospheres
metacestode larva
cysticercus, cysticercoid, coenurus, hydatid

Parasitology [LEC] (23 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions