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Zoology > Aschelminthes > Flashcards

Aschelminthes Flashcards

1
Q

Whipworm

A

Trichuris trichuria

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2
Q

Old world hookworm

A

Ancylostoma duodenale

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3
Q

New world hookworm

A

Necator americana

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4
Q

Pinworm

A

Enterobius vermicularis

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5
Q

Filarial worm

A

Wuchereria bancrofti

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6
Q

Guinea worm

A

Dracunculus medinensis

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7
Q

Eye worm

A

Loa loa

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8
Q

Lung worm

A

Metastrongylus

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9
Q

Heartworm/ Dog heartworm

A

Dirofilaria immitis

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10
Q

Thread worm

A

Strongyloides

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11
Q

Excretory organ in nematodes

A

Protonephridia/ Renette cells/ Giant cells

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12
Q

Chemo-olfactory receptor in aschelminthes

A

Amphid

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13
Q

Glandulosensory organ

A

Phasmid

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14
Q

Larval forms of aschelminthes

A

Rhabditiform, Filariform, Microfilaria

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15
Q

Auxetic growth

A

Growth in cells only without division

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16
Q

Non-parasitic phasmida

A

Rhabditis

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17
Q

Ascaris is found in

A

Jejunum of small intestine

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18
Q

Number of lips in Ascaris

A

Three

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19
Q

Sensory paillae

A

2 in mid-dorsal lip
1 each in ventro-lateral lips

20
Q

Amphid present in

A

1 each in ventro-lateral lips

21
Q

Number of apertures in Ascaris

A

3 in male (mouth, excretory pore, cloaca)
4 in female (mouth, excretory pore, gonopore, anus)

22
Q

Part of ascaris insoluble in KOH

A

Cuticle

23
Q

Muscles in ascaris

A

Circular muscle layer absent, longitudinal beneath epidermis

24
Q

Enzymes in ascaris secreted by

A

Gland cells of pharynx

25
Q

Reserve food of Ascaris

A

Glycogen in syncytial epidermis

26
Q

Reproductive organs of Ascaris

A
  1. Monodelphic telogonic testes
  2. Didelphic telogonic ovaries
27
Q

Fertilization in Ascaris

A

Occurs in uterus

28
Q

Larva of Ascaris

A

Rhabditiform

29
Q

Moults in Ascaris

A
  1. Zygote develops into juvenile in 10-14 days
  2. 1st moult in soil
  3. 2nd and 3rd moult in lungs.
  4. 4th moult in small intestine.
30
Q

Wandering journey of Ascaris

A

20 days

31
Q

Migratory route of Ascaris

A

Outside ➡️ Intestine ➡️ Liver ➡️ Heart ➡️Lungs ➡️ Trachea ➡️ Oesophagus ➡️ Intestine

32
Q

Drugs used against ascaris

A

Alcopar, Piperazine, Oil of chenopodium

33
Q

Most dangerous intestinal nematode

A

Ancyclostoma duodenale

34
Q

Larvae of Ancyclostoma

A

Eggs ➡️ Rhabditiform ➡️ Filariform (Infective)

35
Q

Moults in Ancyclostoma

A

Twice in soil, once in oesophagus and final in small intestine

36
Q

Infective stage of whipworm

A

Embryonated eggs

37
Q

Disease caused by pinworm

A

Enterobiasis, Oxyriasis

38
Q

Infections in whipworm

A

Autoinfection by itching.
Retroinfection by entry through rectum.

39
Q

Site of infection of Wuchereria bancrofti

A

Lymph nodes and lymphatic vessels

40
Q

Disease caused by Wuchereria bancrofti

A

Elephantiasis, filariasis

41
Q

Hosts of Wuchereria bancrofti

A

Primary : Man and vertebrates
Secondary : Culex (simetimes anopheles and aedes)

42
Q

Drugs used to cure filariasis

A

Antimony and arsenic compounds

43
Q

Smallest intestinal nematode

A

Trichinella spiralis

44
Q

Hosts of Loa loa

A

Primary : Humans and baboons
Secondary : Chrysops (Mango flies)

45
Q

Largest and longest nematode in man

A

Dracunculus medinensis

46
Q

Hosts of Dracunculus

A

Primary : Man
Secondary : Cyclops

Zoology (5 decks)

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