Arthropods & Opportunists

Question 1

Insects that deposit larvae

Answer 1

viviparous

Question 2

Arthropods exhibiting gradual or incomplete metamorphosis

Answer 2

cockroaches, grasshoppers, lice, and bugs

Question 3

Arthropods exhibiting complete metamorphosis.

Answer 3

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

Question 4

tongue worms

Answer 4

class pentastomida

Question 5

Arthropods that are both aquatic and terrestrial in nature

Answer 5

Class arachnida

Question 6

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

Answer 6

Complete metamorphosis

Question 7

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

Answer 7

chitinized cuticle

Question 8

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.

Answer 8

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

Question 9

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

Answer 9

Metamorphosis

Question 10

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.

Answer 10

Chitinized exoskeleton

Question 11

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.

Answer 11

Class Diplopoda (millipedes)

Question 12

Insects that lay eggs

Answer 12

oviparous

Question 13

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.

Answer 13

class chilopoda (centipedes)

Question 14

Arthropods that are aquatic in nature

Answer 14

class crustacea

Question 15

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

Answer 15

facets

Question 16

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

Answer 16

arthropods

Question 17

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

Answer 17

Gradual or incomplete metamorphosis

Question 18

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

Answer 18

adult louse

Question 19

The infestation with the human head-and-body louse

Answer 19

Pediculosis

Question 20

Human body louse or head louse

Answer 20

Pediculus humanus

Question 21

Treatment for head lice

Answer 21

benzene hexachloride

Question 22

also known as crab lice

Answer 22

pubic lice (Phthrius pubis)

Question 23

hog louse

Answer 23

Haematopinus

Question 24

dog biting louse

Answer 24

Trichodectes canis

Question 25

cattle louse

Answer 25

Linognathus

Question 26

Chicken louse

Answer 26

Menopon

Question 27

Pigeon louse

Answer 27

Columbicola

Question 28

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.

Answer 28

Order Siphonaptera (fleas)

Question 29

dog flea

Answer 29

Ctenocephalides canis

Question 30

cat flea (asawa ni ador sa dirty linen)

Answer 30

C. felis

Question 31

human flea

Answer 31

Pulex irritans

Question 32

Rat flea

Answer 32

Xenopsylla cheopis

Question 33

known as the chigger, jigger, or sand flea

Answer 33

tunga penetrans

Question 34

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

Answer 34

Tunga penetrans

Question 35

The cause of scabies

Answer 35

Sarcoptes scabei (Scabies mites )

Question 36

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

Answer 36

Mites

Question 37

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.

Answer 37

Mites

Question 38

MOT of Toxoplasma gondii

Answer 38

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

Question 39

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

Answer 39

Isospora belli

Question 40

An intestinal parasite

Answer 40

Cyclospora cayatanensis

Question 41

Unicellular obligate intracellular parasites

Answer 41

Microsporidia

Question 42

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

Answer 42

Cryptosporidium parvum

Question 43

Causes diarrheal syndrome in AIDS patients

Answer 43

Isospora belli

Question 44

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

Answer 44

Cyclospora cayatanensis

Question 45

Means "hospital infection"

Answer 45

nosocomial parasitic infections

Question 46

bed bugs

Answer 46

Order Hemiptera

Question 47

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

Answer 47

Dermanyssus

Question 48

This mite attacks people living in rat-infested buildings.

Answer 48

Ornithonyssus

Question 49

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

Answer 49

Pyemotes

Question 50

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.

Answer 50

Glycyohagus, Acarus, Tyrophagus

Question 51

House dust mites

Answer 51

Dermatophagoides

Question 52

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

Answer 52

Myiasis