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Microbiology Exam 2 > Ch. 19 Skin and Wounds - Part 5 > Flashcards

Ch. 19 Skin and Wounds - Part 5 Flashcards

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Biology 101 flashcards
1
Q

Piedra is caused by what two things?

A

piedraia hortae

trichosporon beiglii

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2
Q

Piedraia hortae and trichosporon beiglii are what?

A

fungus

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3
Q

What are the two types of Piedra?

A

Black and white

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4
Q

Black piedra sign are what?

A

Hard, black, irregular nodules on the hair shaft

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5
Q

White piedra signs are what?

A

Soft, gray-white, irregular nodule on the hair shaft

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6
Q

Mode of transmission for piedra?

A

Often transmitted via shared brushes and combs; opportunistic pathogen

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7
Q

What causes pityriasis versicolor?

A

malassezia furfur

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8
Q

What type of organism is malassezia furfur?

A

fungus

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9
Q

Mode of transmission for pityriasis versicolor?

A

Opportunistic pathogen

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10
Q

Signs of pityriasis versicolor?

A

Hypo- or hyperpigmented patches of scaly skin.

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11
Q

How long does it take to return to normal from pityriasis versicolor?

A

months

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12
Q

How do they identify pityriasis versicolor?

A

Green color under UV light

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13
Q

Pityriasis versicolor aka?

A

Tinea versicolor

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14
Q

What causes black piedra?

A

Piedraia hortae

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15
Q

What causes white piedra?

A

Trichosporon beigelii

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16
Q

What are diseases caused by fungi called?

A

mycoses

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17
Q

Most mycoses are ____?

A

opportunistic

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18
Q

Most mycoses are contagious? T/F

A 
False, most are
NOT contagious (some exceptions)
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19
Q

Piedra is treated how?

A

By sharing infected hair

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20
Q

Which are superficial mycoses?

A

Piedra and pityriasis versicolor

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21
Q

Cutaneous infections caused by dermatophytes (specific group of fungi, not a Genus)?

A

dermatophytoses

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22
Q

Dermatophytoses aka?

A

ringworm

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23
Q

Are ringworm involved in “ringworm”

A

no

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24
Q

What are the 3 causes of dermatophytoses?

A

epidermophyton sp.
microsporum sp.
trichophyton sp.

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25
Q

What kind of organisms cause dermatophytoses?

A

fungus

26
Q

Mode of transmission for dermatophytoses?

A

direct contact/ fomites

27
Q

Dermatophytoses: athlete’s foot called?

A

Tinea pedis

28
Q

Dermatophytoses: jock itch called?

A

Tinea cruris

29
Q

Dermatophytoses: trunk called?

A

Tinea corporis

30
Q

Dermatophytoses: head

A

Tinea capitis

31
Q

Tinea unguium aka?

A

onychomycosis

32
Q

Dermatophytoses aggravated by what?

A

heat and moisture

33
Q

“jock itch” spreads from what?

A

The feet

34
Q

Tinea unguium/onychomycosis is on what surface?

A

nails

35
Q

Sporotrichosis caused by?

A

sporothrix schenckii

36
Q

Sporothrix schenckii is what kind of organism?

A

fungus

37
Q

Sporotrichosis aka?

A

Rose-gardener’s disease

38
Q

Mode of transmission for Sporotrichosis?

A

Opportunistic pathogen, thorn prick or splinters allow transmission.

39
Q

Type of Sporotrichosis that has modular lesions around the infection site.

A

Cutaneous sporotrichosis

40
Q

Type of sporotrichosis that has secondary lesion occur on the skin along the course of the lymphatic vessels.

A

lymphocutaneous sporotrichosis.

41
Q

Tinea capitis: crusts formed on the scalp, with associated hair loss is called?

A

favus

42
Q

Leishmaniasis caused by?

A

Leishmania sp. –>
L. braziliensis,
L. donovani,
L. tropica

43
Q

Type or organism that causes Leishmaniasis?

A

protozoan

44
Q

What is the vector for Leishmaniasis?

A

Sand fly

45
Q

What are the three types of Leishmaniasis?

A

Cutaneous
mucocutaneous
visceral

46
Q

Leishmaniasis is nicknamed what?

A

“Baghdad boil”

47
Q

Visceral Leishmaniasis aka?

A

kala azar

48
Q

Large painless skin lesions are in this type of Leishmaniasis?

A

cutaneous

49
Q

Skin lesions enlarge to encompass mucous membranes in this type of Leishmaniasis?

A

mucocutaneous

50
Q

Parasite is spread by macrophages throughout the body in this type of Leishmaniasis?

A

visceral

51
Q

Leishmaniasis is endemic in parts of the ______?

A

Tropics and subtropics

52
Q

What is the reservoir for Leishmaniasis?

A

dogs

53
Q

In Leishmaniasis, most cases heal without treatment? T/F

A

true

54
Q

Scabies is a ____ infection.

A

parasitic

55
Q

What type of organism causes scabies?

A

mites

56
Q

What causes scabies?

A

sarcoptes scabiei

57
Q

Scabies signs and symptoms?

A

INTENSE ITCHING and rash of small red bumps at infection site; OFTEN LINEAR

58
Q

Mode of transmission for scabies?

A

Prolonged body contact

59
Q

Epidemics for scabies occurs in what kind of conditions?

A

crowded

60
Q

With scabies, you may see what characteristics?

A

“BURROWS” or “TUNNELS”

Microbiology Exam 2 (9 decks)

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