Brainscape's Knowledge GenomeTM

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


See full index

Parasitology > Trematode Powerpoint > Flashcards

Trematode Powerpoint Flashcards

1
Q

2 class of Platyhelminthes are parasitic__and__

A

Trematoda and Cestoda

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

What are 6 typical characteristics of Platyhelminthes?

A
  • flatowrms
  • triploblastic
  • incomplete or no gut
  • bilaterally symmetrical
  • acoelomate
  • cephalized
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

___is the outermost covering of Trematodes body

A

Tegument

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

The outter portion of the trematodes tegument is called__.

It is covered by cell membrane on the surface, extends inside basal lamina

A

Distal Cytoplasm

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

What are the functions of the glycocalyx? (3 major)

A
  • attachment to host
  • protection from antibodies and digestive enzymes
  • uptake and storage of vital molecules from enviornment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The __is the inner zone of Trematodes tegument and is connected to distal region by cytoplasmic pores

A

Proximal cytoplasm

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

The___of the tegument of trematodes contains nuclei, cell organelles like the ER, golgi body, mitochondria, etc. is responsible for teguments maintenance

A

Proximal cytoplasm

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

What are the 5 functions of the trematodes tegument?

A
  • protection
  • nutrient absorption
  • synthesis and secretion of various nutrients
  • excretion and osmoregulation
  • sensory role
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Name the 2 suckers of Trematodes

A
  • Anterior oral sucker surrounding mouth

- Ventral sucker (acetabulum) ventral surface

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

The male organs of Trematodes tend to mature first and produce sperm that are stored until needed; this is called____

A

protandryorandrogyny

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

In a few free-living species of Trematodes, the ovary matures first;this is called ___

A

protogyny or gyandry

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

The pathway of sperm in Trematodes is___

A

Testis (paired, exception Schistosoma (4-9) -> Vas efferens ->Vas deferens -> Cirrus sac (with seminal vesicle and prostate gland) ->cirrus (male copulatory organ)

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

What is the function of Vitelline glands in Trematodes?

A

Egg-shell and yolk production

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

____is the chamber where eggs are formed in trematodes

A

Ootype

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

___is the gland that creates uterus lubricant for egg passage

A

Mehlis gland

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

___a long convoluted tube through which shelled eggs passes to the outside via the genital pore

A

uterus

17
Q

The muscular, distal portion of the uterus is called ____: helps propel the eggs out of the uterus. ___ also serves in copulation

A

Metraterm

18
Q

Trematode eggs are typically have, on one end, a lid-like structure called the ____ or cap (see red arrow), which allows the miracidium to hatch (Exception: Schistosoma)

A

operculum

19
Q

Rediae give rise to a tailed larva

A

Cercaria

20
Q

Water is necessary for further development and after reaching an aquatic environment, the egg completes the rest of the development and a free-swimming ciliated ___emerges

A

Miracidium

21
Q

In schistosomes, cercaria penetrate the definitive host directly and lacks the

A

metacercaria stage

22
Q

___ is where some larval parasites secrete chemicals that inhibit the development of the snail reproductive system

A

Parasitic castration

23
Q

Describe Miracidium (5 things)

A
  • tiny
  • elongated
  • ciliated
  • apical end has retractable nonciliated apical papilla with 3 secretory glands
  • ciliated epidermis
24
Q

Describe Sporocysts (3 things)

A
  • Develop from miracidium in intermediate host (snail)
  • From miracidium dissapearance of all structures but protonephridia
  • No mouth or digestive system
25
Q

Describe Redia

A
  • have 1 or more stumpy appendages, procrusculi, ambulatory buds
  • move within host
  • functional digestive system
  • Cercaria leave redia through birth pore near pharynx
26
Q

Describe Cercariae (5 things)

A
  • most have tails for swimming
  • actively seek next host or vegetation
  • this represents juvenile of adult trematode
  • have mouth, oral sucker
  • ventral sucker
  • also has genital primordium which becomes male and female reproductive system

Parasitology (8 decks)

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