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mycology > STRUCTURE OF DERMATOPHYTES > Flashcards

STRUCTURE OF DERMATOPHYTES Flashcards

1
Q

can cause cutaneous Mycoses

A

Dermatophytes

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2
Q

the only dermatophytes that has absent microconidia

A

E. floccosum

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3
Q

E. floccosum macroconidia (3)

A

➢ Broad or spatulate
➢ Beaver’s tail
➢ contains 2-5 cells by perpendicular cross walls

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4
Q

M. canis microconidia (3)

A

Sparse, clavate, sessile

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5
Q

M. canis macroconidia (3)

A

Spindle-shaped,
tapered ends,
echinulate thick walls

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6
Q

M. gypseum Microconidia

A

Broadly spindle-shaped with rounded ends

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7
Q

M. gypseum macroconidia

A

Broadly spindle-shaped with rounded ends

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8
Q

M. audouinii microconidia

A

Rare, chlamydospore like

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9
Q

M. audouinii macroconidia (2)

A

Chlamydoconidia-like swellings,
bizzare-shaped

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10
Q

T. mentagrophytes microconidia

A

Grave-like clusters

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11
Q

T. mentagrophytes macroconidia

A

Cigar-shaped

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12
Q

T. rubrum microconidia (2)

A

Tear-shaped,
birds on fence

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13
Q

T. rubrum macroconidia

A

Pencil-shaped

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14
Q

T. tonsurans microconidia

A

Balloon-shaped

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15
Q

T. tonsurans macroconidia

A

Cylindrica

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16
Q

Epidermophyton body parts affected

A

Skin and nails

17
Q

Microsporum body part affected

A

Hair and skin

18
Q

Trichophyton body parts affected

A

Hair, skin, and nails

19
Q

T. mentagrophytes
Urease
Thiamine
Hair baiting

A

Urease - (+) 2days
Thiamine - negative
Hair baiting - (+) ectothrix

20
Q

T. rubrum
Urease
Thiamine
Hair baiting

A

Urease - (-) 7days
Thiamine - negative
Hair baiting

21
Q

T. tonsurans
Urease
Thiamine
Hair baiting

A

Urease - (+) 2days
Thiamine - positive
Hair baiting - (-) endothrix

22
Q

infects the outer part of the hair follicle

A

Ectothrix

23
Q

has the ability to penetrate inner part of the hair

A

Endothrix

24
Q

Growth in rice grains
M. audouinii
M. canis
M. gypseum

A

M. audouinii - poor
M. canis - good
M. gypseum - good

25
Q

Wood’s lamp fluorescence (364 nm)
M. audouinii
M. canis
M. gypseum

A

M. audouinii - (+)
M. canis - (+)
M. gypseum - (-)

26
Q

Differential Tests on Trichophyton spp.

A

Urease
Thiamine
Hair baiting

mycology (7 decks)

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