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Botany > MYCOVIRO - CH 60 of book part 2 > Flashcards

MYCOVIRO - CH 60 of book part 2 Flashcards

1
Q

Type of conidia of microsporum spp
-large, spindle-shaped, echinulate, rough-walled, septated
-

A

macroconidia

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2
Q

Type of conidia of microsporum spp

-small, club-shaped, born on hyphae

A

microconidia

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3
Q

most important cause of tinea capitis; anthropophilic

A

M. audouinii

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4
Q

infected hairs: yellow-green under Wood’s lamp

A

M. audouinii

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5
Q

colony: velvety aerial mycelium that is colorless to light gray to tan

A

M. audouinii

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6
Q

reverse side: salmon-pink to reddish brown

A

M. audouinii

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7
Q

terminal chlamydoconidia, antler (curved, freely branching) and raquet (enlarged, club-shaped) hyphae

A

M. audouinii

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8
Q

favic chandeliers, pectinate bodies

A

M. audouinii

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9
Q

does not grow on rice

A

M. audouinii

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10
Q

anthropophilic microsporum

A

M. audouinii

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11
Q

zoophilic microsporum

A

M. canis

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12
Q

causes ringworm infection in dogs and cats

A

M. canis

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13
Q

fluoresce bright yellow-green under Wood’s lamp

A

M. canis

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14
Q

small spores outside the hair (ectothrix)

A

M. canis

M. gypseum

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15
Q

growth on rice used to differentiate which Microsporum species

A

Audouinii (-) and canis (+)

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16
Q
  • colony: granular or fluffy with feathered border, white to buff, lemon-yellow to yellow-orange fringe at
    the periphery
A

M. canis

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17
Q
  • reverse side: bright yellow
A

M. canis

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18
Q
  • macroconidia: spindle-shaped, echinulate (with spiny projections), thick-walled and with curved ends
A

M. canis

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19
Q
  • microconidia: rare, few
A

M. canis

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20
Q
  • grows on rice
A

M. canis

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21
Q

geophilic microsporum

A

M. gypseum

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22
Q

does not fluoresce under Wood’s lamp

irregularly covered with arthroconidia

A

M. gypseum

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23
Q
  • ectothrix infection: hair
A

M. canis

M. gypseum

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24
Q
  • reverse side: orange to brownish
A

M. gypseum

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25
Q

macroconidia: thick-walled, large, ellipsoidal, with rounded ends, echinulate surface

A

M. gypseum

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26
Q
  • colony: flat, irregularly fringed, coarse and powdery surface, buff or cinnamon color
A

M. gypseum

27
Q

rapid-growing microsporum

A

canis and gypseum

28
Q

ellipsoidal macroconidia

A

M. gypseum

29
Q

spindle-shaped macroconidia

A

M. canis

30
Q

thick-walled macroconidia

A

M. gypseum

31
Q
  • bamboo hyphae
A

M. ferruginum

32
Q

_____ are typically identified in a host compromised by some underlying disease process, such as lymphoma, leukemia, diabetes mellitus, or another defect of the immune system.

A

Opportunistic fungal infections

33
Q
  • tissue invasive infections that occur in immunocompromised hosts
A

OPPORTUNISTIC MYCOSES

34
Q
  • common cause of tinea pedis and tinea cruris
A

E. floccosum

35
Q
  • susceptible to cold; specimens should not be refrigerated
A

E. floccosum

36
Q
  • calcofluor white or KOH: fine branching hyphae
A

E. floccosum

37
Q
  • colony: olive-green to khaki, dull orange-brown periphery, cottony white aerial mycelium
A

E. floccosum

38
Q
  • microconidia: absent
A

E. floccosum

39
Q
  • macroconidia: smooth, thin-walled, club-shaped (beaver-tail), multiseptate
A

E. floccosum

40
Q

a fungus ball of the external auditory canal

A

otomycosis

41
Q

(infection of the nail and sur- rounding tissue),

A

onychomycosis

42
Q

causes disseminated infections: pulmonary or sinus fungus ball, allergic pulmonary aspergillosis, external otomycosis, mycotic keratitis, onychomycosis, sinusitis, endocarditis, CNS infection

A

Aspergillus spp.

43
Q

Aspergillus may produce what substance

A

aflatoxin (hepatotoxin)

44
Q

cause of fungus ball and otitis externa

A

A. niger

45
Q

what aspergillus spp

from nasal cultures –> subsequent invasive aspergillosis

A

A. flavus

46
Q

Hyaline, septate, monomorphic molds
may cause mycotic keratitis, disseminated fusariosis with fungemia and necrotic skin
lesions
recovered from respiratory tract secretions and skin

A

Fusarium spp.

47
Q

Hyaline, septate, monomorphic molds

causes wound infection and oral thrush

A

Geotrichum candidum

48
Q

Hyaline, septate, monomorphic molds
associated with disseminated infection, fungemia, subcutaneous lesions, and
esophagitis

A

Acremonium spp.

49
Q

Hyaline, septate, monomorphic molds

may cause allergic bronchopulmonary penicilliosis or chronic allergic sinusitis

A

Penicillium spp.

50
Q

Hyaline, septate, monomorphic molds

Associated with endophthalmitis, cutaneous infections and arthritis

A

Paecilomyces spp.

51
Q

Hyaline, septate, monomorphic molds

Associated with arthritis

A

Paecilomyces spp.

52
Q

Hyaline, septate, monomorphic molds

Associated with cutaneous infections

A

Paecilomyces spp.

53
Q

endocarditis, fungemia and invasive disease

A

P. variotii

54
Q

associated with onychomycosis, pulmonary infection, fungus ball and invasive fungal
disease

A

Scopulariopsis spp.

55
Q

associated with fungus ball

A

Scopulariopsis spp.

56
Q

associated with pulmonary infection

A

Scopulariopsis spp.

57
Q

what to observe for opportunistic mycoses

A

observe septate hyphae with dichotomous branching; some may have rounded, thick-walled cells

58
Q

Antigen-Protein assay:

targets antigens of Aspergillus spp.

A

Galactomannan assay

59
Q

Antigen-Protein assay

detects antigens common to all clinically important fungi

A

Beta-glucan assay

60
Q

susceptible to cycloheximide

A

Aspergillus spp.

61
Q

most commonly recovered Aspergillus spp.

species most often seen in the clinical laboratory

A

A. fumigatus

62
Q

Aspergillus spp. resistant to ampicillin B

A

A. terreus

63
Q

A. terreus resistant to what antibiotic

A

ampicillin B

Botany (324 decks)

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