1A relationship where two or more species live closely together
symbiosis
2A symbiotic relationship where both organisms benefit
mutualism
3What is an example of mutualism?
Termites and flagellates
4A relationship where one species benefits without harming the other
commensalism
5What is an example of commensalism?
Shark and remora
6A relationship where one species benefits at the expense of another
parasitism
7What parasite causes amoebic dysentery?
Entamoeba histolytica
8The study of parasites and their relationship with hosts
parasitology
9An organism that lives on or in a host and obtains nutrients from it
parasite
10What does infect mean in parasitology?
Invasion inside the human body
11What does infest mean in parasitology?
Invasion on the human body
12Transport carriers responsible for transmitting parasites
vectors
13A parasite that lives inside the host
endoparasite
14A parasite that lives on the external surface of the host
ectoparasite
15Give an example of an endoparasite
Ascaris lumbricoides
16Give an example of an ectoparasite
Pediculus humanus capitis
17Unicellular parasitic microorganisms
protozoans
18Multicellular parasitic worms
helminths
19What are arthropods in parasitology?
Class Insecta
20A free-living organism that passes through the digestive tract without infecting the host
spurious parasite
21A parasite that lives on another parasite
hyperparasite
22An artifact mistaken for a parasite
pseudoparasite
23A parasite that cannot survive outside the host
obligatory parasite
24A parasite capable of living independently of a host
facultative parasite
25A parasite that remains in the host from early life to maturity
permanent parasite
26A parasite that lives on the host for a short time
temporary parasite
27A host that is not the parasite’s usual host
accidental host
28The host where the adult sexual stage occurs
definitive host
29The host where the larval asexual stage occurs
intermediate host
30A host that harbors parasites infectious to humans
reservoir host
31A host where the parasite remains arrested in development
paratenic host
32A vector where the parasite multiplies or develops
biologic vector
33A vector that only transmits the parasite
mechanical vector
34The form of the parasite that invades humans
infective stage
35The form of the parasite detectable in the laboratory
diagnostic stage
36A life cycle that requires no intermediate host
direct life cycle
37A life cycle that requires an intermediate host or vector
indirect life cycle
38The process of inoculation
exposure
39When the parasite becomes established in the host
infection
40A person who harbors a pathogen without symptoms
carrier
41Time between infection and appearance of symptoms
incubation period
42Time between infection and detectable evidence of infection
prepatent period
43When an individual infects himself
autoinfection
44Reinfection with the same parasite causing massive infection
superinfection
45What are common sources of infection?
Soil, water, food, arthropods, people, environment, self
46What is the most common mode of transmission?
Mouth
47Parasite entry through the skin
skin penetration
48Transmission from mother to child
congenital transmission
49What are stages of parasitism?
Contact, entry, migration, establishment, development, reproduction, exit
50What is the most commonly submitted specimen in parasitology?
Stool
51Substances that preserve parasite morphology
fixatives
52What is the stool to fixative ratio?
3 parts fixative to 1 part stool
53Visual examination of specimens
macroscopic examinations
54Laboratory examination using a microscope
microscopic examinations
55A technique to increase parasite detection
concentration method
56A technique to increase parasite detection
concentration method
57What specimens are examined in parasitology?
Stool, blood, tissue, sputum, urine, CSF, skin snips