L15 Flashcards
Strep can best be visualized on ____ Agar while H. Influenzae is best seen on ____ Agar
Blood Agar; Chocolate Agar
True or False: Most bacteria can grown on blood agar
True
MacConkey Agar is a selective and differential agar.
Which is Lactose (+) vs. (-)
- Shigella
- E. coli
E.coli = Lactose (+)
Shigella = Lactose (-)
Staph is Catalase __ while Strep is Catalse __
Staph = (+)
Strep = (-)
Staph is Coagulase ___ while Staph a. is Coagulase ___
Staph = (-)
Staph a = (+)
True or False: E coli. is oxidase (-) while P. aeruginosa is oxidase (+)
True
True or False: Cutibacterium, Diptheroids (e.g Corynebacterium) and Staph make up one’s NF
True
___ is the most common skin disease and can presents with comedomes (non-inflammatory lesions) or inflammatory lesions
Acne Vulgaris
True or False: Inflammatory acne occurs if there is overgrowth of C. acnes (NF)
True
In the case of inflammatory acne, a plugged comedome leads to ruptured follicle, inflammatory lesion, which can become a ___ => ___ => ___
papule, pustule, nodule
In non-inflammatory acne, an open or close microcomedome can form. What are another name for these?
Open Microcomedome =
Black Heads
Close Microcomedome =
White Heads
In non-inflammatory acne, microcomedome forms due to what two conditions?
- Increased sebum
- Plugged follicular canal
- Increased keratinization
- Desquamination of cells lining canal
Which 3 pathogens can lead to infections of the integument?
- S. pyogenes
- S. aureus
- C. acnes
Which pathogen of the skin is a cocci that is both coagulase/catalase (+), as well as B-hemolytic (blood agar)?
A. C. acnes
B. S. pyogenes
C. S. aureus
C. S. aureus
Which pathogen of the skin is a cocci, group A Strep (GAS), B-hemolytic (blood agar), and bacitracin sensitive
A. C. acnes
B. S. pyogenes
C. S. aureus
B. S. pyogenes
True or False: C. acnes is a gram (+), anaerobic, diptheroid that is the predominant anaerobic member of NF that colonizes hair follicles
True
C. acnes makes ___, which degrades sebum into inflammatory substance, attracts WBC’s
Lipase
Which of the following pathogens give rise to: Toxic (SSSS, Bullous Impetigo) or Non-Toxin Mediated Pyodermic Infections (Furuncle, Epidemic Impetigo, Carbuncle, Folliculitis)
A. S. aureus
B. C. acnes
C. S. pyogenes
A. S. aureus
Which of the following pathogens give rise to: Scarlet Fever, Cellulitis, or Epidemic Impetigo?
A. S. aureus
B. C. acnes
C. S. pyogenes
C. S. pyogenes
True or False: Bound coagulase causes bacteria to clump while free coagulase causes protective fibrin clot to form
True
Epidemic Impetigo, which arises due to S. pyogenes, can result in _____, a condition in which the kidney dysfunctions
Acute Glomerulonephritis
True or False: Cellulitis is often cause by either: Gram (+) Cocci, Gram (-) Rods, or E. corrodens
True