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Microbiology > Platyhelminths > Flashcards

Platyhelminths Flashcards

1
Q

Characteristics of Helminths

A

Worm-like
Eukaryote
Multicellular
With digestive, circulatory, nervous, excretory & reproductive systems

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2
Q

Male reproductive organs are in one individuals and female reproductive in other

A

Dioeocious

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3
Q

One animals has both male and female reproductive organs

A

Monoecious/Hermaphroditic

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4
Q

Phyla of Parasitic Helminths

A
  • NEMATODES (Roundworm)
  • PLATYHELMINTHS (Flatworms)
    a. Trematoda (Flukes)
    b. Cestode (Tapeworms)
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5
Q

Transmission of Helminths

A
  1. Skin penetration
    * Necator americanus
    * Strongyloides stercoralis
  2. Bites of mosquiro vectors
    * Wuchereria bancrofti
    * Brugia malayi
  3. Inhalation
    * Enterobius vermicularis
  4. Fecal-soil contamination
    * Ascaris lumbricoides
    * Trichris trichuria
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6
Q

Flat, leaf-shaped bodies with ventral sucker and oral sucker

A

Trematodes

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7
Q

TF: Trematodes are Hermaphroditic

A

True

*Except Schistosoma

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8
Q

Schistosoma Spp.

A

Blood Flukes⭐

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9
Q

Disease caused by Schistosoma spp

A

Schistosomiasis

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10
Q

Schistosoma mansoni

A

Intestine
Feces
Liver fibrosis
Lateral spine

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11
Q

Schistosoma japonicum

A

Intestine
Feces
Liver fibrosis
Rudimentary Lateral spine ⭐

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12
Q

Schistosoma haematobium

A

Urinary Bladder (Urine)
Hematuria (Egyptian hematuria) ⭐
Terminal spine

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13
Q

Mode of Transmission of Schistosoma

A

Contact of cercariae (Immature form) into skin

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14
Q

Treatment of Schistosomiasis

A

Praziquantel

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15
Q

Paragonimus westermani

A

Lung Fluke

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16
Q

Disease caused by Paragonimus westermani

A

Paragonimiasis

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17
Q

Transmission of Paragonimus westermani

A

Ingestion of crustaceans hosts

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18
Q

Effects of Schistosomiasis

A
  • Swimmer’s Itch
  • Katayama Fever
  • Chronic fibrosis
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19
Q

Fasciolopsis buski

A

Giant Intestinal Fluke

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20
Q

Disease caused by Fasciolopsis buski (Giant Intestinal fluke)

A

Fasciolopsiasis

21
Q

Food source of Fasciolopsis buski

A

Aquatic Plant
Chestnut

22
Q

Intermediate Host of Fasciolopsis buski

A

Snail

23
Q

Largest trematode infecting humans

A

Fasciolopsis buski

24
Q

Fasciola hepatica

A

Liver Fluke
Sheep Liver Fluke

25
Q

Disease caused by Fasciola hepatica (Sheep Liver Fluke)

A

Fascioliasis

26
Q

DOC for Fasciola hepatica/Sheep liver fluke

A

Triclabendazole ⭐

27
Q

Clonorchis sinensis

A

Chinese/Oriental Fluke

28
Q

Disease caused by Clonorchis sinensis or Chinese Fluke

A

Clonorchiasis

29
Q

Transmission of Clonorchis sinensis

A

Eating raw freshwater fish/snails ⭐

30
Q

TREMATODES

A

Schistosoma
Fasciola
Clonorchis
Fasciolopsis
Paragonimus

31
Q

CESTODES

A

Taenia spp
Diphyllobotrium latum
Hymenolepsis nana
Dipylidium caninum
Echinococcus granulosus

32
Q

Cestodes Characterisitics

A

Flat
Ribbon-like chain of Segements - Proglottids
Lacks digestive systen - absorb nutrients from hosts

33
Q

Taenia solium

A

Pork Tapeworm

34
Q

Taenia saginata

A

Beef Tapeworm

35
Q

Disease caused by taenia spp

A

Taeniasis

36
Q

Diphyllobotrium latum

A

Broad Fish Tapeworm

37
Q

Intermediate host of Diphyllobotrium latum

A

Freshwater fish, Crustaceans

38
Q

Disease caused by Diphyllobotrium latum

A

Diphyllobothriasis - Vit B12 deficiency

39
Q

Hymenolepis nana

A

Dwarf tapeworm

40
Q

Disease caused by Hymenolopsis nana

A

Hymenolepiasis

41
Q

Smallest tapeworm/cestode to infect humans

A

Hymenolopsis nana/Dwarf tapeworm

42
Q

Dipylidium caninum

A

Dog Tapeworm

43
Q

Echinococcus granulosus

A

Hydatid worm, hyper tape-worm or dog tapeworm

44
Q

Transmission of Echinococcus granulosus

A

Ingestion of Eggs in feces

45
Q

Disease caused by E. granulosis

A

Cystic Echinococcosis / Hydatid Disease

46
Q

Site of infection of E. granulosis

A

Liver and Brain

47
Q

Cysts of Echinococcus granulosis containing watery fluid

A

Hydatid cyst

48
Q

Reaction to worm antigens that can occur if cyst ruptures

A

Anaphylactic shock

49
Q

Intermediate Host of Taenia saginata

A

Cattle

Microbiology (17 decks)

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