Ch. 8 - The Nematodes Flashcards Preview

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Flashcards in Ch. 8 - The Nematodes Deck (92)
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Organisms that are multicellular and contain internal organ systems

Helminths

1

Other name of nematodes

Intestinal roundworms

2

Class of nematodes

Nematoda

3

Multicellular parasites that appear round in cross section

Nematodes

4

3 basic morphologic forms of nematodes

- eggs
- larvae
- adult worms

5

Which adult worm gender is larger?

Female

6

Phylum of nematodes

Nemathelminthes

7

6 intestinal species of nematodes

- Enterobius vermicularis
- Trichuris trichiura
- Ascaris lumbricoides
- Necator americanus
- Anyclostoma duodenale
- Strongyloides stercoralis

8

2 intestinal-tissue species of nematodes

- Trichinella spiralis
- Dracunculus medinensis

9

2 common names for Enterobius vermicularis

- pinworm
- seatworm

10

2 diseases associated with E. vermicularis infection

- Enterobiasis
- pinworm infection

11

Nematode with eggs that are flattened on one side (D-shaped)

E. vermicularis eggs

12

Specimen of choice for E. vermicularis eggs

Cellophane tape preparation/scotchtape swab

13

Host of E. vermicularis

Hhmans

14

MOT of E. vermicularis

Ingestion of embryonated eggs

15

Infective stage of E. vermicularis

Embryonated egg

16

Term for a pregnant female worm

Gravid

17

Organ where adult E. vermicularis worms reside

Colon

18

Nematode whose gravid female adults migrate outside the body to the perianal region to to deposit eggs

E. vermicularis

19

Condition where infected individuals reinfect themselves

Autoreinfection

20

Condition when infective pinworm eggs migrate back into the host, develop and reproduce rather than becoming dislodged

Retroinfection

21

Amoeba that may be transmitted by E. vermicularis

Dientamoeba fragilis

22

Most common helminth known to cause infection in the US

Pinworm (E. vermicularis)

23

3 drugs for the treatment of E. vermicularis infection

- mebendazole
- albendazole
- pyrantel pamoate

24

2 morphologic form recovered in pinworm infections

- eggs
- adult females

25

Common name for Trichuris trichiura

Whipworm

26

2 diseases associated with T. trichiura infection

- Trichuriasis
- whipworm infection

27

Shape of T. trichiura egg

- Barrel-shaped
- football-shaped
- Japanese lantern shape

28

What substance is at the ends of the T. trichiura egg?

Bipolar mucus/hyaline plug

29

Specimen of choice for T. trichiura eggs

Stool