Normal flora

Question 1

Pharynx and Trachea

Answer 1

normal oral cavity flora

-Strep, Staph, anaerobes, Neisseria, diptheroids

Question 2

Lower respiratory tract

Answer 2

Should be sterile, because particles the size of bacteria do not readily reach it

Question 3

Skin

Answer 3

• Staphylococcus epidermidis
• Staphylococcus aureus (in small numbers)
• Micrococcus species
• Nonpathogenic Neisseria species
• Streptococci
• Diphtheroids
• Propionibacterium species
• Peptostreptococcus species

Question 4

GI and rectum

Answer 4

• Various Enterobacteriaceae except Salmonella, Shigella, Yersinia, Vibrio, and Campylobacter species
• Enterococci
• Streptococci
• Diphtheroids
• S. aureus in small numbers
• Anaerobes in large numbers

Question 5

Genitalia

Answer 5

• Any amount of the following: Corynebacterium species, Lactobacillus species, Streptococci, nonpathogenic Neisseria species
• The following when mixed and not predominant: Enterococci, Enterobacteriaceae and other gram-negative rods, S. epidermidis, Candida albicans, and other yeasts
• Anaerobes; the following may be important when in pure growth or clearly predominant: Prevotella, Clostridium, and Peptostreptococcus species

Question 6

Potentially pathogenic pharynx and trachea

Answer 6

Haemophilus, mycoplasma, pneumococci