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MICROBIO > Helminths > Flashcards

Helminths Flashcards

1
Q

a symbiotic relationship that is of benefit to one party or symbiont

A

Parasitism

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2
Q

Parasites that live outside
the host’s body are referred to as

A

ectoparasites

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3
Q

Parasites that live INSIDE
the host’s body are referred to
as

A

endoparasites

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4
Q

If more than one
host is involved, the ______ is the one that harbors the adult or sexual stage of the parasite or the sexual phase of the life cycle.

A

definitive
host

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5
Q

harbors the larval or asexual stage of the parasite or the
asexual phase of the life cycle

A

intermediate
host

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6
Q

is a living organism that can serve as a host in a particular parasite’s life cycle, but is not a
usual host in that life cycle.

A

accidental host

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7
Q

A parasite THAT cannot continue its life cycle.

A

Dead-end hosts

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8
Q

is an organism that can be parasitic but does not have to live as a parasite

A

facultative parasite

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9
Q

on the other hand, has no
choice; to survive, it must be a parasite

A

obligate parasite

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10
Q

is the study of parasites
that cause human disease

A

Medical parasitology

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11
Q

these microbes are classified
taxonomically by their
mode of locomotion.

A

Protozoa

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12
Q

Amebas
(amebae) move by means

A

pseudopodia

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13
Q

Protozoa classified as ______ have no pseudopodia, flagella, or cilia, and therefore exhibit
no motility.

A

Sporozoa (sporozoans)

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14
Q

is caused by various species of
flagellated protozoa
and is usually
transmitted via the
bite of an infected
sand fly

A

Leishmaniasis

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15
Q

three forms of leishmaniasis

A

cutaneous,
mucocutaneous (or mucosal), visceral

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16
Q

this form of leishmaniasis starts with a papule that enlarges into
a craterlike ulcer

A

cutaneous

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17
Q

this leishmaniasis is characterized by fever, enlarged liver and spleen, lymphadenopathy, anemia, leukopenia, and progressive emaciation and
weakness

A

Visceral leishmaniasis, also known as kala-azar,

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18
Q

this type of protozoa is principally a zoonosis and
is usually transmitted via the bite of an infected sand fly.

Transmission by blood transfusion and person-to-person contact have been reported

A

Leishmaniasis

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19
Q

Protozoal infections of the eyes include

A

conjunctivitis and
keratoconjunctivitis

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20
Q

is a systemic sporozoan infection that, in immunocompetent persons, may be asymptomatic or resemble infectious
mononucleosis

A

Toxoplasmosis

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21
Q

a protozoal gastrointestinal infection that may be
asymptomatic, mild, or severe accompanied by dysentery, fever, chills, bloody or mucoid diarrhea or constipation,

A

Amebiasis

22
Q

a protozoal gastrointestinal infection of the colon causing
diarrhea or dysentery, colic, nausea, and vomiting.

A

Balantidiasis

23
Q

is a gastrointestinal infection caused by a coccidial
protozoan

A

Cryptosporidiosis.

24
Q

s a protozoal infection of the
duodenum

A

Giardiasis

25
Q

Protozoal Infections of the
Genitourinary Tract

A

Trichomoniasis

26
Q

a sexually transmitted protozoal disease affecting both men and women. is usually symptomatic in women, causing vaginitis

A

Trichomoniasis

27
Q

Infects colon with secondary infection of liver. patients pass noninfectious trophozoites as well as infectious cysts in
stools

A

Entamoeba histolytica

28
Q

Infects lower small intestine. * Diagnosis by modified acid-fast stain of stool sample ;oocyst

A

Cryptosporidium parvum

29
Q

*Infection usually results from drinking contaminated water.

Acute infection shows sudden onset with foul smelling, watery diarrhea.

A

Giardia lamblia

30
Q

a systemic disease caused by flagellated protozoa in the
bloodstream, known as hemoflagellates.

A

African Trypanosomiasi

31
Q

The frequency with which the cycle of chills, fever, and sweating is repeated is referred to as periodicity what protozoal infection is this

A

Malaria

32
Q

means parasitic worm.

A

helminth

33
Q

The helminths that infect humans are always

A

endoparasites

34
Q

The two major divisions of helminths

A

roundworms (nematodes)
flatworms

35
Q

The flatworms are further divided into

A

tapeworms (cestodes)

flukes (trematodes)

36
Q

The stages of the
typical helminth life
cycle are the

A

egg,

the larva

adult worm.

37
Q

The host that harbors the larval stage is called the

A

intermediate host

38
Q

host that harbors the adult
worm is called the

A

definitive host

39
Q

(also known as
“river blindness”)

A

Onchocerciasis

40
Q

3 classes of artbropods

A

insects (class Insecta),

arachnids (class Arachnida),

crustaceans

41
Q

an arthropod in whose
body the pathogen multiplies or matures (or both).

A

biologic vector

42
Q
  1. Humans develop malaria after the injection of
    Plasmodium __________ into the bloodstream by an
    infected female Anopheles mosquito when she takes a
    blood meal.
    a. male and female gametocytes
    b. schizonts
    c. sporozoites
    d. trophozoites
A

c

43
Q

These Plasmodium life cycle stages must be ingested
by a female Anopheles mosquito for the Plasmodium
life cycle to continue in the mosquito.
a. male and female gametocytes
b. schizonts
c. sporozoites
d. trophozoites

A

a

44
Q

Which of the following protozoal diseases is not
transmitted via an arthropod vector?
a. African trypanosomiasis
b. American trypanosomiasis
c. babesiosis
d. giardiasis

A

d

45
Q

. Which of the following protozoal diseases is least
likely to be transmitted via blood transfusion?
a. American trypanosomiasis
b. babesiosis
c. malaria
d. trichomoniasis

A

d

46
Q

Which of the following protozoal diseases is least
likely to be transmitted via an infected food handler
who fails to wash his or her hands after using the
bathroom?
a. amebiasis
b. cryptosporidiosis
c. giardiasis
d. toxoplasmosis

A

d

47
Q

You are visiting a friend whose parents raise pigs.
Which of the following diseases are you most likely
to acquire by drinking well water at their farm?
a. amebiasis
b. balantidiasis
c. cryptosporidiosis

A

b

48
Q

You are working on a cattle ranch. Which of the following diseases are you most apt to acquire as you
perform your duties at the ranch?
a. amebiasis
b. balantidiasis
c. cryptosporidiosis
d. giardiasis

A

c

49
Q

. Which of the following protozoal diseases are you
most likely to acquire by eating a rare hamburger?
a. amebiasis
b. balantidiasis
c. giardiasis
d. toxoplasmosis

A

d

50
Q

Which of the following associations is incorrect?
a. African trypanosomiasis . . . tsetse fly
b. amebiasis . . . fecally contaminated water
c. Chagas’ disease . . . mosquito
d. toxoplasmosis . . . cats

A

c

51
Q

Which of the following is an example of an infectious disease that is caused by a facultative parasite?
a. African trypanosomiasis
b. giardiasis
c. malaria
d. PAM

A

d

MICROBIO (27 decks)

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