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Principles of Microbiology > EXAM 4 CHAPTER 21 > Flashcards

EXAM 4 CHAPTER 21 Flashcards

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Biology 101 flashcards
1
Q

What are the barriers of the skin that must be overcome for infections to establish?

A

Epidermis. Sweat increases the potential for microbial growth by adding moisture to the skin. More microbes in region that contains more sweat (underarms, groin)

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2
Q

Abscess

A

Localized collection of pus

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3
Q

Bulla

A

Fluid filled blister no more than 5mm in diameter

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4
Q

Carbuncle

A

Deep, pus-filled abscess generally formed from multiple furuncles

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5
Q

Crust

A

Dried fluid from a lesion on skin surface

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6
Q

Cyst

A

Encapsulated sac filled with fluid, semi-solid matter or gas typically located below upper skin layers

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7
Q

Folliculitis

A

A localized rash due to inflammation of hair follicles

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8
Q

Furuncle

A

Pus filled abscess due to infection of a hair follicle

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9
Q

Macule

A

Smooth spots of discoloration of the skin

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10
Q

Papule

A

Small bump raised on the skin

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11
Q

Pseudocyst

A

Lesion that resembles a cyst but with less defined boundary

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12
Q

Purulent

A

Pus-producing

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13
Q

Pustules

A

Fluid or pus filled bumps on the skin

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14
Q

Pyoderma

A

Any suppurative (pus-producing) infection of the skin

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15
Q

Ulcer

A

Break in the skin; open sore

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16
Q

Vesicle

A

Small fluid filled lesion

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17
Q

Wheal

A

Swollen, inflamed skin that itches or burns

18
Q

Acute bacterial conjunctivitis has what discharge and is caused by what pathogen?

A

Purulent discharge. Haemophilus influenzae.

19
Q

Bacterial keratitis has what discharge or symptoms and is caused by what pathogen?

A

Redness and irritation. Staphylococcus epidermidis or pseudomonas aeruginosa

20
Q

Neonatal Conjunctivitis has what discharge or symptoms and is caused by what pathogen?

A

Purulent discharge, scarring and perforation of cornea. Chlamydia trachomatis.

21
Q

Trachoma (granular conjunctivits) has what discharge or symptoms and is caused by what pathogen?

A

Chronic scarring blindness. C. trachomatis

22
Q

What does P. acnes cause?

A

Acne

23
Q

What does S. pyogenes cause?

A

Cellulitis, erysipelas, erythema nodosum, impetigo

24
Q

What does S. aureus cause?

A

Impetigo

25
Q

What does K. pneumoniae cause?

A

Bacterial conjunctivitis

26
Q

What does P. aeruginosa cause?

A

Opportunistic infections of wounds and burns

27
Q

What is the difference between staphylococcal and streptococcal skin infections?

A

Staphylococcal infections are spread by skin to skin and look more like wounds whereas streptococcal is spread by respiratory droplets. Staphyl is presented as a wound and often has purulent discharge whereas Strepto is more of a rash and redness of the affected area.

28
Q

What is the etiologic agent of neonatal conjunctivitis?

A

Being born to someone with an STI (Chlamydia or Gonorrhea are common)

29
Q

Identify the etiologic agent of Trachoma?

A

Chlamydia Trachomatis

30
Q

What are ways that HPV infections present?

A

Warts, plantar warts, flat warts, filiform warts

31
Q

What is the difference between viral and bacterial conjunctivitis?

A

Viral has nonpurulent watery discharge whereas bacterial has purulent discharge

32
Q

What are the fungal pathogens of the skin?

A

Dermatophytes

33
Q

Where is Tinea corporis located in the body?

A

Body

34
Q

Where is Tinea Capitis located in the body?

A

Scalp

35
Q

Where is Tinea Pedis located in the body?

A

Feet

36
Q

Where is Tinea barbae located in the body?

A

Beard

37
Q

Where is Tinea cruris located in the body?

A

Groin

38
Q

Where is Tinea unguium located in the body?

A

Toenails/fingernails

39
Q

Loiasis is caused by what

A

Parasitic helminth

40
Q

What causes warts

A

Human papillomaviruses

41
Q

What causes cold sores

A

Herpes simplex virus

Principles of Microbiology (16 decks)

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