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PARASITOLOGY > LESSON 2: NEMATODES > Flashcards

LESSON 2: NEMATODES Flashcards

(54 cards)

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1
Q

TRUE OR FALSE:
Are Nematodes roundworms?

A

TRUE

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2
Q

What is the general morphology of Phylum Nematoda?

A

Unsegmented, elongated and cylindrical in shape

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3
Q

Phylum Nematoda:
The body is covered by a _________ which may be ____________, __________ or __________

A

non-nucleated
cuticle
smooth striated, bossed or ornamented
with spines

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4
Q

TRUE OR FALSE:
Phylum Nematoda are long, cylindrical and unsegmented

A

TRUE

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5
Q

Phylum Nematoda:
Body Cavity is called _______

A

Pseudocoele

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6
Q

This contains the viscera (digestive, reproductive and parts of the nervous and excretory systems)

A

Pseudocoele

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7
Q

Phylum Nematoda:
mouth/buccal cavity which may be provided
with spines, hooks, cutting plates, stylets, or other structures
for attachment or penetration

A

Anterior end

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8
Q

What is the length of Phylum Nematoda?

A

mm to a meter in length

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9
Q

What is the movement of Phylum Nematoda?

A

sinuous changes of their bodies

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10
Q

TRUE OR FALSE:
The sexes are ______, and the females are ______ than the males.

Male posterior end is usually _______

A

Separate
Larger
Curved

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11
Q

Enumerate the reproductive system of the male in Phylum Nematoda

A

Male: testes, vas deferens, seminal vesicle, ejaculatory duct,
cloaca

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12
Q

Enumerate the accessory copulatory apparatus for Male Reproductive System:

A

a. gubernaculum (wing- like appendage)
b. telamon
c. copulatory spicule
d. copulatory bursa (umbrella like ex:
Hookworms)

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13
Q

It has a wing like appendage

A

Gubernaculum

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14
Q

It is an umbrella shape such as Hookworms

A

Copulatory bursa

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15
Q

TRUE OR FALSE:
Female reproductive system of the Phylum Nematoda may be single or bifurcated?

A

True

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15
Q

TRUE OR FALSE:
Female reproductive system of the Phylum Nematoda may be single or bifurcated?

A

True

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16
Q

Enumerate the Female Reproductive System

A

Ovary, oviduct, seminal receptacle, uterus,
ovijector, and vagina

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17
Q

For Female Adults:
a. lay an ova
b. larvae
c. _______

A

a. Oviparous
b. viviparous / larviparous
c. parthogenetic

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18
Q

What system has a complete alimentary tract?

A

Digestive System

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19
Q

The buccal cavity in the digestive system comprises of?

A

Spines, hooks, cutting plates and teeth

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20
Q

Digestive System: ESOPHAGUS
__________ , __________ , __________ , __________ , or
__________ ,

A

filariform, rhabditiform, spiruroid, strongyliform or stichosoma

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21
Q

What system has chemoreceptors?

Study These Flashcards
A

Nervous system

22
Q

excitatory neurotransmitter

Study These Flashcards
A

Acetyl choline

23
Q

inhibitory
neurotransmitter

Study These Flashcards
A

Gamma-amino butyric acid (GABA)

24
NERVOUS SYSTEM: Most nematocidal drugs interfere with _______________
neurotransmission
25
What are the 2 classifications of the Nervous System?
Amphids Phasmids
26
A pair of laterally placed minute receptor organs in the cephalic or cervical region of all nematodes
AMPHIDS
27
A pair of minute lateral post-anal organs in species w/o caudal glands
PHASMIDS
28
EXCRETORY SYSTEM: with ___________ or __________ & an _____________
Collecting tubules Collecting canal Excretory pores
29
TRUE OR FALSE: Phylum Nematoda has no circulatory system?
True
30
NO CIRCULATORY SYSTEM a. fluid of the body cavity contains ________, _______, ______, _______ and ______ b. fulfills the functions of the _______
a. hemoglobin, glucose, proteins, salts and vitamins b. blood
31
TRUE OR FALSE: Phylum Nematoda has no respiratory system?
True
32
Enumerate the developmental stages for Phylum Nematoda
1) egg stage 2) four larval stages 3) adult stage
33
MODES OF ATTACHMENT: Example of Anchorage with attenuated ends
T. trichiura
34
MODES OF ATTACHMENT: Example of Oral attachment to the mucosa
Ancylostoma
35
MODES OF ATTACHMENT: Example of Oral attachment to the mucosa
Ancylostoma
36
MODES OF ATTACHMENT: Example of Penetration of the tissues
Strongyloides
37
MODES OF ATTACHMENT: Example of Retention in the folds of the mucosa
Lumcricoides
38
MODES OF NOURISHMENT: By sucking with ___________ of _______
ingestion of blood
39
MODES OF NOURISHMENT: By ingestion of ________ and blood by embedded worms. An example of ____________
lyzed tissues L. trichuris
40
MODES OF NOURISHMENT: By feeding with intestinal contents. An example of ___________
A. lumbricoides
41
MODES OF NOURISHMENT: By deriving from ________. An example of _________
Body fluids Filarial worms
42
What is the lifespan of: 1) Trichinella spiralis 2) Enterobius vermicularis 3) lumbricoides 4) Hookworms 5) Filarial worms 6) T. trichiura 7) S. stercoralis
1)Trichinella spiralis: 4 – 16 weeks 2) Enterobius vermicularis: 1 – 2 months 3) lumbricoides: 12 – 17 months 4) Hookworms: at least 14 years 5) Filarial worms: up to 25 years 6) T. trichiura: 5 – 10 years 7) S. stercoralis: 20 – 30 years
43
What are the 3 layers of Nematodes Egg?
o Vitelline membrane o Chorionic or true shell o Albuminous covering
44
These parasites that has a complete layers are the ________ and ______
Ascaris and Trichuris
45
What are the four larval stages?
L1, L2, L3, L4
46
What class of nematodes lack “Phasmids” or without caudal chemoreceptors
Aphasmidia
47
Class: Aphasmidia What are the 2 species which parasitize the small intestine?
a. Trichinella spiralis b. Capillaria philippinensis
48
Class: Aphasmidia What species which parasitize the large intestine?
Trichuris trichiura
49
What class of nematodes is with Phasmids?
Phasmidia
50
Class: Phasmidia What species which parasitize the small intestine?
a. Ascaris lumbricoides b. Necator americanus c. Ancylostoma duodenale d. Ancylostoma ceylanicum e. Strongyloides stercoralis
51
Class: Phasmidia What species which parasitize the large intestine?
Enterobius vermicularis
52
Class: Phasmidia What species which parasitize the tissues?
a. Wuchereria bancrofti b. Brugia malayi c. Loa loa d. Dracunculus medinensis
53
Class: Phasmidia What species causes larva migrans in man?
a. Ancylostima braziliense b. Ancylostoma caninum c. Toxocara spp

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