NORMAL FLORA Flashcards
` Study of the relationship between microorganisms and their environment including humans.
MICROBIAL ECOLOGY
` Inhabit the body of normal healthy humans ` May be non-pathogenic or pathogenic including opportunistic pathigens
NORMAL FLORA
Regularly found in a given area of the body at a given age.
RESIDENT FLORA
= Those that inhabit the skin, mucous membrane = Temporarily for hours, days or weeks = Derived from the environment.
TRANSIENT FLORA
BENEFITS OF NORMAL FLORA
Inhibit the growth of pathogenic organisms preparing newborns’ immune system. Protect the organs’ and systems in direct contact with the environment. ` Synthesize important vitamins (Vit. K) essential to humans. ` Prevents pathogenic organisms from attaching/penetrating the skin by producing mucin ` Aids in food digestion by producing enzymes ` Helps in the metabolism of steroids
5 examples of normal flora of the skin
staphylococcus epidermis, staphylococcus aureus, diptheroids, candida species
5 examples of normal flora of the human oral cavity
virdans streptococci, lactobacilli, corynebacterium sp., bacteroides sp., actinomyces sp.
5 examples of normal flora of the respiratory tract
streptococcus pneumoniae, streptococcus pyogenes, neisseria meningitidis, non-hemolytic streptococci, neisseria sp.
5 examples of normal flora of the eye
diptheroids, staphylococcus epidermis, staphylococcus aureus, commensal neisseria, streptococcus pneumonia
normal flora of stomach, duodenum, distal ilieum, proximal ileum, jejunum, colon
stomach: lactobacillus, candida, streptococcus, helicobacter pylori, peptostreptococcus
duodenum: streptococcus lactobacillus
distal ileum: clostridium, streptococcus, bacteroides, actinomycinae, corynebacteria
proximal ileum and jejunum: streptococcus, lactobacillus
5 examples of normal flora of the genitourinary tract
peptococcus, corynebacterium, mycobacterium smaegme, fusobacterium, staphylococcus, mycoplasma
the kidney, the ureter, the bladder and upper urethra are sterile T OR F
T
