BIO 226 Chapter Notes - Chapter 14: Candida Albicans, Staphylococcus Epidermidis, Trichomonas Vaginalis
6 Nov 2018
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Document Summary
Normal flora- microorganisms that establish more or less permanent residence on host but do not produce disease under normal conditions; newborns (lactobacillus) Eyes (conjunctiva): staphylococcus epidermidis, s. aureus, streptococci. Nose and throat: s. aureus, s. epidermidis, aerobic diphtheroids (nose); s. aureus, s. epidermidis, diphtheroids, streptococcus pneumoniae (throat) Urinary and reproductive systems: staphylococcus, pseudomonas, lactobacillus (urethra); candida albicans, streptococcus, trichomonas vaginalis (vagina) Transient flora- present for days, weeks, or months and then disappear. Microbial antagonism- competition between microbes; protect the host by preventing the overgrowth of harmful microorganisms. Candida albicans: presence of normal flora inhibits the overgrowth of c. albicans, which can grow when the balance between normal flora and pathogens is upset and when ph is altered. Clostridium difficile: normal flora of the large intestine effectively inhibit: difficile by making host receptors unavailable, competing for available nutrients, or producing bacteriocins.
