Helminths Flashcards
1
Q
What is a Helminth?
A
A parasitic worm.
2
Q
What are the 3 different types of Helminths?
A
- Nematodes.
- Trematodes.
- Cestodes.
3
Q
What are the 2 different types of nematodes?
A
- Bursate.
- Non-bursate.
4
Q
What is a Nematode?
A
Roundworm.
5
Q
What is a Trematode?
A
Fluke.
6
Q
What is a Cestode?
A
Tapeworm.
7
Q
What sort of migration do nematodes take?
A
Hepato-tracheal.
8
Q
Outline the morphology of a nematode?
A
- Buccal cavity.
- Leaf-like crown (lips).
- Teeth.
- Males have bursa and spicules.
- Female have vulval flap.
- surrounded by cuticle.
9
Q
Outline the morphology of a nematode egg?
A
Thick pitted shell.
10
Q
What is a bursa?
A
A fluid filled cavity - in nemotodes used for copulation.
11
Q
Why do nematodes undergo arrested larval development?
A
- To avoid enviromental and immunological conditions.
- Reduce metabolic rate.
12
Q
What is another name for arrested larval development?
A
Hypobiosis.
13
Q
What does epidemiology mean?
A
Factors that contribute to disease and health.
14
Q
What are the 2 different types of tremetodes?
A
- Monogeneans.
- Digeneans.
15
Q
What is a monogenea?
A
A small parasitic flatworm (trematode) with one opening.
