Normal flora

The body contains 10 times more bacteria cells than human cells.

Colonization begins at the time of amniotic membrane rupture.

Completes with pathogens to protect against infection.

Anaerobic bacterial agents in the intestine produce vitamin K and help make B vitamins.

Bacteria in the gastrointestinal tract break down cellulose to aid in digestion.

Normal flora that migrates to other areas of the body other than their native environment can be associated with infection.

Antibiotic use or immune deficiency can cause overgrowth of particularly organisms can lead to disease.

Site=normal flora = potential pathogens:

Skin=Staphylococcus epidermis, Propionbacterium=Staphylococcus aureus

Nasopharynx=Streptococci viridians, Neisseria, Staphylococcus aureus=Streptococcus pneumonia, N. Meningitides, H. influenzae, Group A streptococci, S aureus

Mouth-Streptococci viridians-Candida albicans

Colon-Bacteroides fragilis, E. Coli-B.fragilis, E. coli, Pseudomonas Clostridium

Vagina-Lactobacillus acidophilus, E. Coli, group B streptococci-Candida

Upper urinary tract and bladder-Normally sterile-E. Coli

Average adult human body contains 10 times more bacterial cells than human cells.

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