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Parasitology > INTRO TO PARASITOLOGY > Flashcards

INTRO TO PARASITOLOGY Flashcards

1
Q

a host wherein a parasite undergoes sexual maturity

A

Definitive hosts

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2
Q

host which harbors the larval stages of the parasite

A

intermediate hosts

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3
Q

host that transfers the parasite / no development occurs but parasite remains alive and infective

A

Paratenic/ transport host

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4
Q

Type of host-parasite relationship where only one partner benefits from the association but the host is neither helped nor harmed

A

Commensalism

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5
Q

Host that allows the parasite’s life cycle to continue ; any animal that harbors an infection that can be transmitted to humans

A

Reservoir host

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6
Q

Organisms that can’t exist without a host

A

Obligate parasites

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7
Q

Transmits parasites to humans/animals

A

Vector

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8
Q

parasites found in animals are transmitted to humans thru consumption

A

Zoonosis

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9
Q

parasites live outside the host in an external environment within a protective egg shell or cyst

A

Free living parasites

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10
Q

may live either parasitic or free-living existence ; either obligate or freeliving

A

Facultative parasites

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11
Q

produced by endoparasites (inside the body)

A

Infection

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12
Q

produced by ectoparasite on skin surface, head lice (pediculus humans capitis), scabies

A

Infestation

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13
Q

relationship that is both benefcial to parasite and host

A

Mutualism

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14
Q

the infected person is his own direct source of reexposure via oral anal route

A

Autoinfection

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15
Q

if an individual harboring a parasite is reinfected with the same species of parasite

A

Superinfection

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16
Q

body of knowledge concerning disease in human populations or communities rather than an individual

A

Epidemiology

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17
Q

when disease in human population maintains a steady , moderate level

A

endemic

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18
Q

when disease in human population has a high prevalence

A

hyperendemic

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19
Q

disease is disseminated over extensive areas of the world

A

Pandemic

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20
Q

a sharp rise in the incidence or outbreak of disease

A

Epidemic

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21
Q

appears only occassionally in one or few members of the community

A

Sporadic

22
Q

multi cellular parasites

A

Helminths

23
Q

host harbors the parasite WITHOUT demonstrating symptoms

A

Carrier

24
Q

Classification of Helminths

A

a. Nematodes (roundworms)
b. Platyhelminths (flatworms)
- trematodes (flukeworms)
- cestodes (tapeworms)
c. Acanthocephalans (thorny headed worms)

25
Q

thorny headed worms

A

Acanthocephalans

26
Q

unicellular parasites

A

Protozoa

27
Q

Classification of Protozoa

A

a. Sarcodina
b. Mastigophora
c. Ciliophora
d. Sporozoa

28
Q

classification of protozoa wherein there is movement through pseudopods

A

Sarcodina

29
Q

classification of protozoa which refers to the flagellates

A

Mastigophora

30
Q

one partner benefits at the expense of the other

A

Parasitism

31
Q

Locomotor organelles

A
  • Pseudopodia
  • Flagella
  • Cilia
32
Q

tiny, hair like structures composed of kinetids

A

Cilia

33
Q

classification of protozoa which refers to the ciliates

A

Ciliophora

34
Q

basic unit of cilia that has slender protuberances

A

kinetids

35
Q

classification of protozoa wherein the organisms has an adult stage that is not motile

A

Sporozoa

36
Q

slender, whip like structures

A

flagella

37
Q

lashlike appendage that protrudes from the cell body

A

Flagella

38
Q

temporary extensions of the cell/plasma membrane and used for locomotion and feeding

A

Pseudopodia

39
Q

fingerlike projections and utilizes iron from RBC

A

Pseudopodia

40
Q

Types of Asexual reproduction

A

Binary Fission & Multiple fission

41
Q

Movement is like protoplasmic streaming (ex. Amoeba)

A

Pseudopodia

42
Q

Asexual reproduction that has 2 daughter cells

A

Binary Fission

43
Q

Asexual reproduction wherein the nucleus of the parent diides into many daughter nuclei by repeated divisions

A

Multiple fission

44
Q

meiosis ; sexual reproduction by union of 2 whole cells ; daughter cells are called gametes

A

gametogony

45
Q

enzymes released by parasites make it possible for them to digest food available in the environment

A

Lytic necrosis

46
Q

cellular proliferation and infiltration at the site of the parasite

A

Stimulation of Host-tissue reaction

47
Q

when the parasite punctures the skin producing wounds

A

Traumatic damage

48
Q

the entry of an animal parasite may open pathways in the skin or intestinal tract for invasion by other pathogenic microorganisms

A

Opening of pathways for secondary Invaders

49
Q

arthropods/ vectors introduce toxins to the skin

A

Toxic & allergic phenomena

50
Q

WBC that proliferates when there is parasitic infection

A

Eosinophil

Parasitology (3 decks)

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