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Flashcards in Parasitology Deck (109)
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1

D-shaped eggs were recovered from the perianal swab of a child with anal pruritus
What is the infection

Enterobiasis (pinworm)

2

Process of living together of 2 unlike organisms

Symbiosis

3

one species benefits without harming or benefiting the other

commensalism

4

both species benefit one another

mutualism

5

one species benefits while harming the other

parasitism

6

parasite lives inside the body of the host

endoparasite

7

presence in host connotes infection

endoparasite

8

lives outside the body of the host

ectoparasite

9

presence in host connotes infestation

ectoparasite

10

need a host at some stage of their life cycle to complete development and propagation

obligate parasite

11

may exist in a free-living state but becomes parasitic when the need arises

facultative parasite

12

parasite that establishes itself in a host it does not ordinaerily live

accidental/ incidental parasite

13

remains on host for life

permanent parasite

14

lives on host for short period of time

temporary parasite

15

free-living organism that passes through digestive tract with infection of host

spurious parasite

16

host where parasite attains sexual maturityb

definitive or final host

17

in malaria which is the definitive host

mosquito

18

host which harbors the asexual or larval stage

intemediate host

19

host where parasite does not develop further to later stages

paratenic host

20

allow life cycle to continue and become additional sources of human infection

reservoir host

21

transmits parasite from one host to another

vector

22

transmits parasite only after it has completed its development

biologic vector

23

only tranports parasite

mechanical or phoretic vector

24

infected individual becomes his own direct source of infection

autoinfection

25

infected individual is furhter infected with same species leading to massive infection

hyperinfection or superinfection

26

Modes of transmission

Contaminated food and water
Skin penetration
Arthropod vectors
Congenital transmission
Inhalation of airborne eggs
sexual intercours

27

what cells are affected by antiprotozoal drugs

high metabolic activity -neuronal, renal rubular, intestinal, bone marrow stem cells

28

protozoa infecting the intetinal tract

Entaemoeba histolytica (Amoebiasis)
Giardia lamblia (Giardiasis)
Cryptosporidium parvum (Cryptosporidiosis )

29

protozoa infecting the Urogenital tract

Trichomonas vaginalis (Trichomoniasis )

30

protozoa infecting blood and tissue

Plasmoidium spp (Malaria)
Toxoplasma gondii (Toxoplasmosis)
Trypanosoma spp. (Chagas diseases, sleeping sickness)