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Parasitology Lecture > Arthropods & Opportunists > Flashcards

Arthropods & Opportunists Flashcards

1
Q

Insects that deposit larvae

A

viviparous

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2
Q

Arthropods exhibiting gradual or incomplete metamorphosis

A

cockroaches, grasshoppers, lice, and bugs

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3
Q

Arthropods exhibiting complete metamorphosis.

A

mosquitoes, flies, butterflies, moths, ants, bees, wasps, fleas, beetles

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4
Q

tongue worms

A

class pentastomida

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5
Q

Arthropods that are both aquatic and terrestrial in nature

A

Class arachnida

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6
Q

In this type of metamorphosis, an arthropod undergoes four stages: egg, larva, pupa, and adult.

A

Complete metamorphosis

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7
Q

This aids the insect’s skin to not be sensitive to contact.

A

chitinized cuticle

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8
Q

This class of arthropods is considered the largest, representing 70% of the phylum. It is the most important group of arthropods from the medical viewpoint.

A

Class Insecta (flies, mosquitoes, bees, wasps, butterflies, bugs)

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9
Q

Refers to the change in form or structure of an arthropod that occurs during the period of development

A

Metamorphosis

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10
Q

A special mechanisms of arthropods which they use against their enemies which is primarily a nitrogenous polysaccharide which makes the integument impervious to water; appendages which may be lost and later regenerated; hairs, scales or spinesl and body fluids which may be used effectively for survival.

A

Chitinized exoskeleton

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11
Q

These are terrestrial, elongated and have many segments. The body is cylindrical with two pairs of legs per body segment. There are no poison claws. They do not bite humans, but secrete substances that are irritants to human skin.

A

Class Diplopoda (millipedes)

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12
Q

Insects that lay eggs

A

oviparous

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13
Q

Arthropods that are terrestrial, elongated, and have many segments. The body is dorsoventrally flattened with a pair of legs on each body segment. The appendages of the first body segment are modified to serve as poision claws.

A

class chilopoda (centipedes)

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14
Q

Arthropods that are aquatic in nature

A

class crustacea

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15
Q

What is the difference between active flying insects and walking types?

A

facets

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16
Q

These are bilaterally symmetrical invertebrate animals with segmented bodies, jointed appendages, and hard outer coverings or exoskeletons.

A

arthropods

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17
Q

In this type of metamorphosis, an arthropod undergoes three stages: egg, nymph, and adult.

A

Gradual or incomplete metamorphosis

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18
Q

an arthropod that is about the size of a sesame seed that has 6 legs (each with claws) and is tan to grayish-white

A

adult louse

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19
Q

The infestation with the human head-and-body louse

A

Pediculosis

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20
Q

Human body louse or head louse

A

Pediculus humanus

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21
Q

Treatment for head lice

A

benzene hexachloride

22
Q

also known as crab lice

A

pubic lice (Phthrius pubis)

23
Q

hog louse

A

Haematopinus

24
Q

dog biting louse

A

Trichodectes canis

25
Q

cattle louse

A

Linognathus

26
Q

Chicken louse

A

Menopon

27
Q

Pigeon louse

A

Columbicola

28
Q

These are wingless insects measuring less than 4mm, usually 1.4 to 2 mm in length. Its body is laterally compressed and covered with spines which enable them to move freely.

A

Order Siphonaptera (fleas)

29
Q

dog flea

A

Ctenocephalides canis

30
Q

cat flea (asawa ni ador sa dirty linen)

A

C. felis

31
Q

human flea

A

Pulex irritans

32
Q

Rat flea

A

Xenopsylla cheopis

33
Q

known as the chigger, jigger, or sand flea

A

tunga penetrans

34
Q

It may also pose significant problems in dogs but infestation tned to be sporadic, geographically isolated, or related to special environmental circumstances.

A

Tunga penetrans

35
Q

The cause of scabies

A

Sarcoptes scabei (Scabies mites )

36
Q

These are common at all times in very poor communities with inadequate washing facilities.

A

Mites

37
Q

Transmission of these arthropods occurs primarily by the transfer of ovigerous females during person-to-person, skin-to-skin contact. Occasionally, transmission may occur via fomites.

A

Mites

38
Q

MOT of Toxoplasma gondii

A

Blood tranfusion/organ transplant
Consuming undercooked, infected meat
Ingesting contaminated water, soil with cat feces
Mother to child transmission

39
Q

A coccidian parasite commonly found as a cause of diarrhea in patients from the Carribean and Africa.

A

Isospora belli

40
Q

An intestinal parasite

A

Cyclospora cayatanensis

41
Q

Unicellular obligate intracellular parasites

A

Microsporidia

42
Q

The parasite is released in feces as oocyst containing 4 crescent shaped naked or non-encysted sporozoites.

A

Cryptosporidium parvum

43
Q

Causes diarrheal syndrome in AIDS patients

A

Isospora belli

44
Q

In normal host, it causes self-limitng infection with abdominal pain.

A

Cyclospora cayatanensis

45
Q

Means “hospital infection”

A

nosocomial parasitic infections

46
Q

bed bugs

A

Order Hemiptera

47
Q

This mite is known to attach humans, but is aactually a common parasite of wild birds.

A

Dermanyssus

48
Q

This mite attacks people living in rat-infested buildings.

A

Ornithonyssus

49
Q

People handling infested grain, cotton, and hay may develop dermatitis due to this mite.

A

Pyemotes

50
Q

These stored product mites cause dermatitis in humans often called miller’s, grocer’s, copra, or worker’s rash, depending on the material being handled. These parasites can also precipitate an attack of bronchial asthma.

A

Glycyohagus, Acarus, Tyrophagus

51
Q

House dust mites

A

Dermatophagoides

52
Q

The infestation or invasion of tissue or organs of humans and animals by dipterous larvae.

A

Myiasis

Parasitology Lecture (7 decks)

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