Parasitology Exam 1

Question 1

Parasite

Answer 1

Organism of the animal kingdom that lives within or upon another organism

Question 2

ectoparasite

Answer 2

Parasite living on the outside of an animal

Question 3

endoparasite

Answer 3

parasite living in tissues or body cavities of another animal

Question 4

stationary parasite

Answer 4

a parasite that attaches somewhere and stays there

Question 5

periodic parasite

Answer 5

a parasite that is on and off host during parts of its life cycle

Question 6

permanent parasite

Answer 6

a parasite that stays on host at all times

Question 7

obligate parasite

Answer 7

needs host, cannot survive on own

Question 8

Facultative parasite

Answer 8

involves 2 generations, a free living and an obligate generation

Question 9

incidental parasite

Answer 9

accidental parasite

Question 10

aberrant parasite

Answer 10

wrong location parasite, ectopic

Question 11

pseudoparasite

Answer 11

looks like parasite but isn’t under a microscope

Question 12

host

Answer 12

animal that harbors parasite at some stage of its life cycle

Question 13

final/definitive host

Answer 13

harbors adult, every parasite must have

Question 14

intermediate/indirect host

Answer 14

an animals that harbors the larval stage and is necessary for completion of its life cycle

Question 15

transport/paratenic host

Answer 15

unnecessary but convenient host that harbors larval stage of parasite, no development occurs

Question 16

monoxenous

Answer 16

only one species will harbor host, narrow host range

Question 17

stenoxenous

Answer 17

narrow host range

Question 18

euryxenous

Answer 18

broad host range

Question 19

direct life cycle

Answer 19

parasite does not need an intermediate host, can use a paratenic

Question 20

indirect life cycle

Answer 20

needs an intermediate host

Question 21

infective stage

Answer 21

stage that parasite can cause infestation

Question 22

routes of infestation (6)

Answer 22

digestion, ingestion of paratenic, in utero, ingestion intermediate host, skin penetration, transmammary

Question 23

Prepatent period

Answer 23

Time between infestation and reproductive maturity where ova is shed.

Question 24

Pathogenicity

Answer 24

The damage the parasite is capable of producing in its host

Question 25

Parasitiasis

Answer 25

animal with active infestation but no clinical signs

Question 26

Parasitosis

Answer 26

when animal has infestation and clinical signs present

Question 27

Hermaphrodites

Answer 27

parasite possesses both male and female organs but none functional

Question 28

monoecious

Answer 28

both sex organs and both are functional

Question 29

dioecious

Answer 29

only one sex organ that is functional

Question 30

vivaparous

Answer 30

egg larvates within mother aka larviparous. see larva in fecal

Question 31

oviparous

Answer 31

parasite lays eggs and see eggs in fecal exam

Question 32

ovoviviparous

Answer 32

eggs laid but see larva in fecal exam

Question 33

Gross examination

Answer 33

description of feces

Question 34

Direct smear

Answer 34

smearing fecal sample on slide with dilute PSS to look for giardia, larva, motility

Question 35

shapes of ova

Answer 35

oval, triangular, square, Dshaped, round

Question 36

operculum

Answer 36

indentation or protrusion of one or both ends of an oval shaped ovum

Question 37

Concentration or float exam

Answer 37

use floatation solution to cause eggs to float in solution

Question 38

cytology

Answer 38

prepped slides to look for clostridium and campylobacter

Question 39

4x magnification

Answer 39

to see ectoparasites and tapeworm segments

Question 40

10x magnification

Answer 40

for scanning to locate parasite

Question 41

40x magnification

Answer 41

used to identify parasite and giardia cysts

Question 42

100x magnification

Answer 42

all cytology, clostridium and campylobacter

Question 43

NSATT

Answer 43

nothing seen at this time

Question 44

platyhelminthes

Answer 44

flatworms

Question 45

nemahelminthes

Answer 45

roundworms

Question 46

arthropoda

Answer 46

ectoparasites

Question 47

most important when reporting parasite

Answer 47

genus