Introduction to Parasitology Flashcards

1
Q

is a specialized branch of ecology

A

Parasitology

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2
Q

is the study of organisms living within a specialized environment

A

Parasitology

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3
Q

is usually not obligatory, but it reflects a relationship in which one species of organism benefits and the other neither benefits nor is harmed

A

Commensalism

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4
Q

is a relationship in which one species of organism lives on or with another organism, with the parasite living at the expense of and often causing harm to the host

A

Parasitism

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5
Q

The study of parasites and hosts interaction is called

A

Parasitology

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6
Q

are living organisms that are associated with food for all or part of their life cycle.

A

Parasites

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7
Q

are organisms providing food for parasites

A

Hosts

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8
Q

Parasitology involves:

A

◼ Biology of parasites
◼ Variation of life cycles among parasites
◼ Methods of invasion
◼ Migration and maturation within the hosts
◼ Effect of parasites upon the hosts
◼ Host reactions and responses
◼ Methods of escape from the hosts
◼ Distribution of the parasites

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9
Q

Types of Parasites:

A
  • Endoparasite
  • Ectoparasite
  • Facultative parasite
  • Accidental parasite
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10
Q

lives inside the host

A

Endoparasite

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11
Q

lives on or in the skin

A

Ectoparasite

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12
Q

free-living organism that can become parasitic if it is accidentally ingested or enters a wound or other body opening.

A

Facultative parasite

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13
Q

normally live in or on a host other than humans, and these parasites do not survive long in an unnatural human host

A

Accidental parasite

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14
Q

Types of Host

A
  • Definitive host
  • Intermediate host
  • Transport host
  • Reservoir host
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15
Q

one in which the parasite reaches sexual or reproductive maturity

A

Definitive host

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16
Q

is one that harbors parasites that engage in asexual
reproduction

A

Intermediate host

17
Q

one that harbors a parasite that does not reproduce but merely goes on to infect a new host

A

Transport host

18
Q

may harbor a parasite that is also infective for humans

A

Reservoir host

19
Q

are microscopic one-celled organisms that are categorized according to their method of movements

A

Protozoans

20
Q

the only parasitic ciliate that causes disease in humans is

A

Balantidium coli

21
Q

three of the most common and medically significant Flagellates include:

A

Giardia lamblia, Trypanosome sp. and Trichomonas vaginalis

22
Q

Classification of Parasites

A
  • Amoeba
  • Metazoans
  • Arthropods
23
Q

Amoeba –include the pathogenic amoeba ____________________________ which cause dysentery in humans

A

Entamoeba and Endolimax

24
Q

are multicellular worm-like invertebrates

A

Metazoans

25
Q

Helminths

A

◼ Cestodes (flatworms)
◼ Nematodes (roundworms)
◼ Trematodes (flukes)

26
Q

possess a hard exoskeleton and jointed appendages

A

Arthropods

27
Q

Host Parasites

A

Insects
- mosquitoes, lice, and fleas
Arachnids
- ticks and mites

28
Q

Effects of Parasites to the Hosts

A

◼ Mechanical damage
◼ Migration through tissues
◼ Nutrition
◼ Toxins
◼ Immunosuppression
◼ Pathogenic

29
Q

hosts which the parasites survives and the host may suffer as
a result of the presence of parasite

A

Susceptible hosts

30
Q

is resistant to the parasite

A

Non-susceptible hosts

31
Q

the accumulation o f numerous individuals of a particular species in one host.

A

Asexual phase

32
Q

the mature phase ofparasite’s life cycle

A

Sexual phase