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PARASIT > . > Flashcards

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1
Q

General morphology: Unsegmented, elongated and cylindrical in shape. The body is covered by a non-nucleated cuticle which may be smooth striated, bossed or ornamented with spines

A

PHYLUM NEMATODA

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2
Q

Body cavity of phylum nematoda is called?

A

Pseudocole

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3
Q

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

A

Pseudocole

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4
Q

mouth/buccal cavity which may be provided with spines, hooks, cutting plates, stylets, or other structures

A

Anyterior end

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5
Q

Malw: accessory copulatory apparatus

A

gubernaculum (wing- like appendage)
 telamon
 copulatory spicule
 copulatory bursa (umbrella like ex:
Hookworms)

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6
Q

Spines, hooks, cutting plates and teeth

A

Digestive system; buccal cavity

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7
Q

What consist the Esophagus?

A

filariform, rhabditiform, spiruroid, strongyliform or
stichosoma

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8
Q

System with chemoreceptors?

A

Nervous system

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9
Q

excitatory neurotransmitter

A

Acetyl choline

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10
Q

inhibitory
neurotransmitter

A

Gamma-amino butyric acid

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11
Q

Most nematocidal drugs interfere with

A

Neurotransmission

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12
Q

pair of laterally placed minute receptor organs in the cephalic or cervical region of all nematodes.

A

Amphids

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13
Q

pair of minute lateral post-anal organs in species w/o caudal glands

A

Phasmid

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14
Q

Releases toxic substances with collecting tubules or collecting canal & an excretory pore

A

Excretory system

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15
Q

Since there in no circulatory system, what does this fluid in the body of nematodes consist of!

A

hemoglobin, glucose, proteins, salts and vitamins

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16
Q

What systemsdoes nematodes doesnt have

A

Circulatory and reproductive system

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17
Q

What are the developmental stages

A

1) egg stage
2) four larval stages 3) adult stage

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18
Q

T. trichiura mode of attachment

A

Anchorage with attenuated end

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19
Q

Mode of attachment: Ancylostoma

A

Oral attachment to the mucos

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20
Q

Mode of attachment: Strongyloides

A

Penetration of the tissues

21
Q

lumcricoides

A

Retention in the folds of the mucosa

22
Q

Life span: Trichinella spiralis:

A

4-16 weeks

23
Q

Life span: Enterobius vermicularis

A

1-2 months

24
Q

Life span! lumbricoides

A

12 – 17 months

25
Q

LS: hookworms

A

At least 14 years

26
Q

LS: Filarial worms:

A

Up to 25 years

27
Q

Ls: T. trichiura

A

5-10 years

28
Q

Ls: S. stercoralis

A

20-30 years

29
Q

Nematodes egg layers for ascaris and trichuris

A

Vitelline membrane
Chorionic or true shell
Albuminous covering

30
Q

Four larval stage

A

o L1 o L2 o L3 o L4

31
Q

lack “Phasmids” or without caudal chemoreceptors

A

Aphasmid

32
Q

Aphasmid; SPECIES WHICH PARASITIZE THE SMALL INTESTINE

A

Trichinella spiralis
Capillaria philippinensis

33
Q

Aphasmid; SPECIES WHICH PARASITIZE THE LARGE INTESTINE

A

Trichuris trichuria

34
Q

with “Phasmids”; with caudal receptor

A

Phasmis

35
Q

Phasmid: SPECIES WHICH PARASITIZE THE SMALL INTESTINE

A

 Ascaris lumbricoides
 Necator americanus
 Ancylostoma duodenale
 Ancylostoma ceylanicum
 Strongyloides stercoralis

36
Q

Phasmid: . SPECIE WHICH PARASITIZE THE LARGE INTESTINE

A

Enterobius vermicularis

37
Q

Phasmid: SPECIES WHICH PARASITIZE THE TISSUES

A

 Wuchereria bancrofti
 Brugia malayi
 Loa loa
 Dracunculus medinensis

38
Q

Phasmid; SPECIES WHICH CAUSES LARVA MIGRANS IN MAN

A

 Ancylostima braziliense
 Ancylostoma caninum
 Toxocara spp.

39
Q

On ova of a parasite that has a smaller or striated shells

A

Capillaria philippinensis

40
Q

Ova that has flattened plugs?

A

Capillaria philippinensis

41
Q

Peanut shaped ova?

A

Capillaria philippinensis

42
Q

Passed in the feces and embryonate in the soil or water and they must reach the water in order to be ingested by small species of fresh water or brackish water fish

A

Capillaria philippinensis

43
Q

Main habitat:  Large Intestines & Small Intestines

A

Capillaria philippinensis

44
Q

Diagnostic Stage: Fertilized Ova

A

Capillaria philippinensis

45
Q

 Death: 2 – 8 weeks after these are seen

A

C. Philippinensis

46
Q

It can cause low electrolyte level specifically the potassium
and there are high levels of IgE during capillariasis

A

C. philippinensis

47
Q

posterior end: ventrally curved with two lobular caudal appendages

A

Trichinella spiralis male

48
Q

it has a single testis located near the posterior part of the body Joined in the mid-body by the genital tube which extends up

A

Trichinella spiralis

49
Q

Has a pair of caudal appendages and two pairs of papilla

A

Cloaca

PARASIT (29 decks)

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