22 and 23 microbe

anaerobes

bacteria able to replicate in the absence of oxygen

obligate anaerobes

killed in the presence of oxygen

moderate anaerobes

can survive in the presence of oxygen, but cannot carry out metabolic functions unless in an anaerobic environment. These are also referred to as aerotolerant.

facultative anaerobes

can live with or without oxygen

exogenous anaerobes

lives outside human body

endogenous anaerobes

normal human flora in animals

anaerobes

90% of bacteria in saliva, nasal washings, and gingival and tooth scrapings are

lactobacillus

plays an important role in the health of the intestinal and female genital tracts and lowers vaginal pH and suppresses growth of other organisms

Gardnerella vaginalis

bacterial vaginosis

swabs

what are the least desirable specimen for anaerobic cultures

vitamin K, hemin, and yeast extract

all anaerobic media must have the following three ingredients

PRAS media

best choice for growing anaerobes

PEA

supports growth of both Gram positive and negative obligate