XIV - Parasitology Flashcards Preview

Microbiology > XIV - Parasitology > Flashcards

Flashcards in XIV - Parasitology Deck (382)
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1

Process of living together of 2 unlike organisms

Symbiosis

2

One species benefits the other without harming/benefiting the other

Commensalism

3

Both species benefit one another

Mutualism

4

One species benefits while harming the other

Parasitism

5

Parasite lives inside the body of the host

Endoparasite

6

Parasite lives outside the body of the host

Ectoparasite

7

Presence of endoparasite in host connotes

infection

8

Presence of ectoparasite in host connotes

infestation

9

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

Obligate Parasite

10

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

Facultative Parasite

11

Establishes itself in a host it does not ordinarily live in

Accidental/Incidental Parasite

12

Remains on host for life

Permanent Parasite

13

Lives on host for a short period of time

Temporary Parasite

14

Free-living organism that passes through digestive tract without infecting the host

Spurious Parasite

15

Host where parasite attains sexual maturity

Definitive/Final Host

16

Host that harbors the asexual or larval stage

Intermediate Host

17

Host wherein the parasite does not develop further to later stages

Paratenic Host

18

Host that allows the life cycle to continue and become additional sources of human infection

Reservoir Host

19

Transmits parasite from one host to another

Vector

20

Transmits parasite only after it has completed its development

Biologic Vector

21

Vector that only transports the parasite

Mechanical/Phoretic Vector

22

Process of inoculating an infective agent

Exposure

23

Establishment of infecting agent inside host

Infection

24

Between infection and evidence of symptoms

Incubation Period (Clinical)

25

Between infection and demonstration of infection

Pre-Patent Period (Biological)

26

Infected individual becomes his own direct source of infection

Autoinfection

27

Infected individual is further infected with same species leading to massive infection

Hyperinfection or Superinfection

28

Host Effects: E. histolytica trophozoites secrete cysteine proteases which digest cellular material

Enzymatic Interference

29

Host Effects: Plasmodium invades RBCs and cause rupture

Invasion & Destruction

30

Host Effects: D. latum competes with host for available supply of vitamin B12 (pernicious anemia)

Nutrient Deprivation