Parasitology Final Flashcards Preview

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Flashcards in Parasitology Final Deck (270)
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1

Definition:

study of parasites

Parasitology

2

Definition:

  • lives at the expense of its host
  • gains nourishment from its host
  • lives in/on another organism

Parasite

3

Definition:

infection of a host other than the normal host species. A parasite may or may not continue full development in this host.

Accidental host

4

Definition:

The association of two different species of organism exhibiting metabolic dependence by their relationship

Symbiosis

5

Definition:

one organism benefits while the other is unaffected

Commensalism 

6

Definition:

both organisms benefit

Mutualism

7

Definition:

one organism benefits at the expense of the other

Parasitism

8

Definition:

  • Lives on the outside of the host
    • Skin/hair
  • infestation
  • ex. Lice and mites

 

Ectoparasite

9

Definition:

  • Lives within the body of the host
  • Infection
  • anemia, iron-deficiency

Endoparasite

10

Defintion:

  • can live independently of host
  • "free-living" stage
  • becomes parasitiv if ingested or enters wound

Facultative parasite

11

Definition:

unable to survive outside host

Obligate parasite

12

Definition:

Artifact mistaken for parasite (pollen, hair, junk)

Pseudoparasite

13

Definition:

  • horrors the adult and/or sexual stage
  • AKA final host

Definitive host

14

Definition:

harbors larval or asexual stage of parasite

Intermediate host

15

Definition:

  • Living carrier that transmits parasite
  • arthropods

Vector

16

Definition:

  • Continuous source of infection
    • animal or area that harbors the infective parasite

Reservoir

17

Definition:

  • infected individual showing no signs of clinical manifestation
  • potential source of infection to others

Carrier

18

What are modes of transmission for parasites?

  • Food
  • Water
  • Soil
  • Vectors

19

Common symptoms of parasitic infections

  • Diarrhea
  • Fever
  • Chills
  • Abdominal pain and cramping
  • Anemia
  • Bowel obstruction
  • Enlarged organs
  • Skin lesions
  • Flatulence

20

What is the class for pseudopods?

Lobosea

21

What is the class for flagellates?

Zoomastigophorea

22

What class are the parasites that move by cilia in?

Kinetofragminophorea

23

What class are roundworms?

Nematoda

24

What class are tapeworms?

Cestoda

25

Trematodes and flukes belong to what class of parasites?

Digenea

26

Liquid stool should be examined within ________ 

30 Minutes

27

Semi-solid stool should be examined within _________ 

1 Hour

28

Formed stool should be examined within ________ 

24 hours

29

True/False:

Formed stool may be refrigerated for up to 72 hours

False- 48 hours

30

This stage of a parasite is capable of invading the definitive host.

Infective stage