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AA Vet Roundworms > Introduction > Flashcards

Introduction Flashcards

1
Q

What are rows of papillae around the rim of the buccal capsule called?

A

Leaf crowns

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2
Q

What are spine-like or finger-like processes that serve sensory or protective functions?

A

Cervical or caudal papillae

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3
Q

What are cervical or caudal alae?

A

Flattened, wing-like expansions of the cuticle in the esophagus or tail region

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4
Q

What structure embraces the female during copulation?

A

Copulatory bursa

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5
Q

What is derived from much expanded caudal alae and is highly developed in which species?

A

Copulatory bursa, strongylids

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6
Q

What is present in the superfamily Spiruroidea with plate-like and cord-like ornamentation?

A

Plaque and Cordon

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7
Q

In which species are leaf crowns most prominent?

A

Horse nematodes

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8
Q

What is the depression on each side of the head called?

A

Amphids

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9
Q

What are phasmids?

A

Depressions on the posterior extremity acting as chemoreceptors

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10
Q

What is situated behind the anal or cloacal opening?

A

Tail

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11
Q

What do you call the region between muscle and alimentary canal?

A

Perienteric space

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12
Q

What component serves the function of blood?

A

Oxyhemoglobin

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13
Q

What is the fluid that causes high pressure maintaining the turgidity and shape of the nematode?

A

Pseudoceole or perienteric fluid

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14
Q

What structure serves the function of a brain?

A

Circumesophageal ring

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15
Q

What is a spicule?

A

The structure that opens in the cloaca during copulation for attachment and to expand the vagina and direct the flow of sperms

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16
Q

Define gobernaculum.

A

Cuticular thickening in the dorsal wall of cloaca which guides the spicule

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17
Q

What is an ovijector?

A

A short muscular organ located at the junction of the uterus and vagina assisting in egg laying

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18
Q

What is the structure that has the same function as an ovijector and is found in some trichostrongylids?

A

Not specified

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19
Q

What are the characteristics of the inner layer of egg shells?

A

Thin, lipid characteristics, impermeable

20
Q

What are the characteristics of the middle layer of egg shells?

A

Tough, chitinous, yellowish in color when thick

21
Q

Which species have cuticles with special adhesive structures like hooks?

A

Tetrameres and Rictularia

22
Q

Which species have cuticles with one or more complicated thickenings?

A

Gongylonema, Acuaria

23
Q

Which species have a cuticle with a crescent cephalic collar?

A

Physaloptera

24
Q

What is the structure formed from the underlying syncytium of cells called hypodermis?

A

Cuticle

25
Q

Which species are known to not have a spicule?

A

Trichinella

26
Q

What is the treatment of trichuris infection in sheep?

A

Fenbendazole

27
Q

Dichlorvos is used for the treatment of trichuris infection in which animals?

A

Dogs

28
Q

Fenbendazole is used for the treatment of trichuris infection in which animals?

A

Dogs, swine, sheep

29
Q

What are small adult bodies resembling Trichuris that lie partially in MM or may be buried in tissues?

A

Capillaridae

30
Q

innervated invaginations of cuticle usually found in the anterior region at the base of the lips

A

amphids

31
Q

unicellular sensilia smaller in the lateral tail region

A

phasmids

32
Q

caudal alae which extends to the tail tip

A

peloderan

33
Q

caudal alae anterior to tail tip

A

leptoderan

34
Q

caudal alae surrounding the cloaca

A

arakoderan

35
Q

inflations of the cuticle around the mouth opening and in the esophageal region

A

cephalic and cervical vesicles

36
Q

type of female who lays unsegmented or unembryonated eggs

A

oviparous

37
Q

spp lays unsegmented or unembryonated eggs

A

ascaris, trichuris

38
Q

lays egg containing fully developed embryo

A

ovoviviparous

39
Q

spp with ovoviviparous females

A

Metastrongylus, Dictyocaulus

40
Q

lays fully developed L1 from the uterus

A

viviparous

41
Q

spp with viviparous females

A

Trichinella

42
Q

reproduces egg without male involvement

A

parthenogenetic

43
Q

synthesis of a new cuticle by hypodermis

A

exsheathment

44
Q

species which autoinfection of the host may occur

A

Strongyloides, Stercoralis, Capillaria philippinensis, Filaroides, Probstmayria

45
Q

medium to large, non-bursate nematodes with direct life cycle

A

Ascaridida

46
Q

small to medium, bursate nematodes with direct or indirect life cycles

A

Strongylida

47
Q
A

AA Vet Roundworms (10 decks)

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