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CLINICAL MICROBIOLOGY - PARASITOLOGY (TopnotcherQT) > METAZOANS (Cestodes/TAPEWORMS) > Flashcards

METAZOANS (Cestodes/TAPEWORMS) Flashcards

memorization

1
Q

Anterior end of the body; muscular organ for attachment; “hold fast”

A

Scolex

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2
Q

2 types of scolex:

A
  1. Bothriate
  2. Acetabulate
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3
Q

Spoon, spatulate, or spindle-shaped scolex; has suctorial grooves/sucking grooves’ order pseudophyllidea

A

Bothriate

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4
Q

Quadrate scolex containing 4 muscular suckers; Rostellum; projection at the apex of the scolex armed with hooks or spines

A

Acetabulate

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5
Q

Part behind the scolex; unsegmented; region of growth where strobilation begins

A

Neck

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6
Q

Chain of segments (proglottids)

A

Strobila

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7
Q

The immature segment (immature proglottid) is located at:

A

near the neck

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8
Q

Segment that are filled with eggs; other reproductive organs have atrophied; uterus remain:

A

Gravid segment

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9
Q

Proglottid detaches from the body to release the eggs; order Cyclophyllidea:

A

Apolytic proglottid

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10
Q

Has uterine pores; detaches only after the eggs are released:

A

Anapolytic proglottid

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11
Q

Common name/other name of Diphyllobothrium latum:

A

“fish tapeworm” / |”broad tapeworm”

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12
Q

Common name/other name of Taenia solium

A

“Pork tapeworm”

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13
Q

Common name/other name of Taenia saginata

A

“Beef tapeworm”

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14
Q

Common name/other name of Hymenolepis nana:

A

“Dwarf tapeworm”

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15
Q

Common name/other name of Dipylidium caninum

A

“Dog & cat tapeworm”

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16
Q

Common name/othername of Echinococcus granulosus:

A

“Hydatid tapeworm”

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17
Q

Tapeworm that has no rostellum or hooks but has 4 suckers:

A

Taenia saginata “beef tapeworm”

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18
Q

Knob0like, rudimentary rostellum without hooks:

A

Hymenolepis diminuta

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19
Q

Conical refractile with 1-7 circlets of hooks, has rostellum:

A

Dipylidium caninum

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20
Q

Globular, rostellum with double crown of 30-36 hooks

A

Echinococcus granulosus

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21
Q

Knob-like, short, invaginated rostellum with single row of 20-30 hooks:

A

Hymenolepis nana

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22
Q

Common name/other name of Hymenolepis diminuta:

A

“Rat tapeworm”

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23
Q

Spatulate; No rostellum and hooks:

A

Diphyllobothrium latum

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24
Q

Tapeworms that have broader than long proglottids:

A
  • Diphyllobothrium latum
  • Hymenolepis nana
  • Hymenolepis diminuta
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25
Tapeworms that have Longer than broad proglottids:
- Taenia solium - Taenia saginata - Echinococcus granulosus
26
Tapeworm proglottid that has Vase, barrel, cucumber seed, pumpkin seed-shaped with compartmented egg clusters:
Dipylidium caninum
27
Tapeworm with Rosette-shaped, central uterus:
Diphyllobothrium latum
28
Tapeworm with7-15 lateral branches:
Taenia solium
29
Tapeworm with 15-30 lateral branches:
Taenia saginata
30
Tapeworm with sacculate (sac-like) uterus:
- Hymenolepis nana - Hymenolepis diminuta
31
Tapeworm with reticulate uterus with egg capsules:
Dipylidium caninum
32
Tapeworm with 12-15 lateral branches:
Echinococcus granulosus
33
Lateral with REGULAR alternation of genital pore:
Taenia solium
34
Lateral with IRREGULAR alternation of genital pore:
Taenia saginata
35
Tapeworm with Bilateral/Double-pored genital pore:
Dipylidium caninum
36
Unilateral genital pore:
- Hymenolepis nana - Hymenolepis diminuta
37
Difference of H. nana and H. diminuta ova:
H. nana: - 2 polar thickenings where 4-8 filaments arise H. diminuta: - 2 polar thickenings where NO filaments arise
38
Tapeworm ova that has 8-12 eggs enclosed in a membranous capsule:
Dipylidium caninum
39
Operculated; abundant yolk granules, small knob at abopercular end:
Diphyllobothrium latum
40
Cystic larvae of T. solium:
Cysticercus cellulose
41
Cystic larvae of T. saginata:
Cysticercus bovis
42
Tapeworm spp that has two (2) intermediate host:
Diphyllobothrium latum 1st: copepods 2nd: fish
43
Tapeworms where man is incidental host:
- Hymenolepis nana - Hymenolepis diminuta - Dipylidium caninum - Echinococcus granulosus
44
MOT of D. latum:
Ingestion of plerocercoid (sparganum) on the flesh of infected fish
45
Pathogenesis/Disease caused by D. latum:
- Diphyllobothriasis - Megaloblastic anemia 9Vit. B12 deficiency)
46
Diphyllobothrium latum IS: DS:
Diphyllobothrium latum IS: Plerocercoid (sparganum) present in infected fish DS: Ovum
47
New name of Diphyllobothrium mansoni:
Spirometra mansoni
48
In Spirometra mansoni, man is the _______ host:
Incidental host
49
Definitive host of Spirometra mansoni:
Cats and Dogs
50
Pathogenesis of Spirometra mansoni:
Sparganosis
51
Extraintestinal infection of Spirometra mansoni:
Most commonly in: 1. Eyes 2. Thorax 3. Abdomen
52
MOT of T. saginata:
T. saginata MOT: ingestion of Cysticercus bovis in infected beef
53
Taenia saginata IH: DH:
Taenia saginata IH: Cow DH: Man
54
Pathogenesis of T. saginata:
Taeniasis (adult stage infection) Intestinal obstruction
55
MOT of T. solium:
Taenia solium MOT: ingestion of Cysticercus cellulose in infected pork; ingestion of eggs; autoinfection possible
56
Pathogenesis of Taenia solium:
- Taeniasis (adult stage infection) - Cysticercosis (Larval stage infection)
57
T. solium taeniasis IH: DH: IS:
T. solium taeniasis IH: Pig/Swine DH: Human IS: Cystic larvae
58
T. solium cysticercosis IH: IS:
T. solium cysticercosis IH: Human IS: Egg/Ovum
59
Extraintestinal infection of Cysticercosis caused by T. solium;
Extraintestinal infection (T. solium) 1. Brain 2. Eyes 3. Subcutaneous tissue
60
Hymenolepis nana MOT: IH: DH: AH: IS: DS:
Hymenolepis nana MOT: ingestion of cysticercoid in an infected rat flea IH: Rat flea DH: Man AH: Rat (accidental host) IS: Embryonated egg DS: Embryonated egg Note: can cause INTERNAL AUTOINFECTION - some eggs can hatch inside the intestine
61
Hymenolepis diminuta MOT: IH: DH: AH:
Hymenolepis diminuta MOT: ingestion of cysticercoid in an infected arthropod IH: Arthropod DH: Rat AH: Man Note: Autoinfection is not possible
62
Diagnostic problem for Dipylidium caninum:
gravid proglottid resemble rice grains (dry) or cucumber seeds (moist)
63
Echinococcus granulosos MOT: IH: DH: Accidental Host: DS:
Echinococcus granulosos MOT: ingestion of egg IH: Sheep DH: Canines Accidental Host: Man DS: Hydatid cyst in tissue (usually liver)
64
Diagnostic procedures for Echinococcus granulosus infection:
- Tissue biopsy - CT scan (& other radiologic procedures) - Casoni's intradermal test
65
Echinococcus multiocularis IH: DH: Accidental Host: MOT:
Echinococcus multiocularis IH: Rodents (e.g. mice) DH: Foxes, wolves (canines) Accidental Host: Man MOT: Ingestion of egg (ova) Note: Extraintestinal infection - most commonly infects the LIVER

CLINICAL MICROBIOLOGY - PARASITOLOGY (TopnotcherQT) (16 decks)

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