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43 terms

Normal Flora

STUDY
PLAY
life
the capacity of a created thing to grow,metabolize,respond(to stimuli),adapt, and reproduce
microbe
is a microorganism that is alive which can be a bacteria,fungus,protozoan
sterile
free of microbes
sterile tissues
blood,brain,muscle,urine,fetus
host
the organism which provides the habitat and nourishment to another organism
normal flora (NF)
a mixture of microbes present at a particular anatomic site
commensal organisms
a relation between individuals of two species in which one species obtain food or other benefits from the other without either harming or benefiting the latter
mutualistic
relationship where both species benefit
parasitic
one species benefits at the expense of the other
opportunistic
a normally harmless or weak member of the normal flora that begins to cause disease when the host immune defenses are impaired
chronic bronchitis
occurs when the NF of the respiratory tract are able to invade the lung tissue of the lower respiratory tract
yeast infection
high incidence in those with diabetes
surgery
breaking the barrier that skin provides open a way to infection
tissue tropism
is the location a microbe prefers to live often based on the requirement of the microbe's life cycle
special adherence molecules
bacteria have this that recognize and bind to their preferred human cell much like antigen-antibody reactions
plasma membrane
different types of cells of the human body each have specific and different molecules protruding from their _________ surface
NF of the skin
microbes only found on the surface
density
this depends on the location of the skin
moist and have high density
groin,axillae (arm pits), skin folds, and fat rolls are _______ and have _____
100-1000 microbes
all other skin has relatively low density o`
10(12) bacteria
the skin of one adult is thought to host a total of
common microbes
staphylococcus epidermidis and propionibacterium acnes
inhabiting the skin and producing fatty acids
NF of the skin benefit us by
the fatty acids prevent yeast and fungi from inhabiting the skin
staphylococcus epidermidis and propionibacterium acnes are very presence and the __________ prevent _________ and_________ from ___________
acne
p.acnes can get trapped in follicles and cause
10(10) bacteria
the mouth of one adult is thought to host a total of
pneumonia
s.pnemoniae causes
cavities
s.mutans and lactobacillus cause
MRSA infections
s.aureus can lead to dreadful
highest densities of bacteria
NF of the colon is home to the
10(14) bacteria
the gastrointestinal tract of one adult is thought to host a total of
10(14) cells
one human is made of
pathogenic bacteria
all of these inhabit the GI tract and prevent __________ from being able to move in
vitamin K
this vitamin is produced by some GI bacteria which we can absorb from the GI tract and it is used by our bodies
strong antibiotics, pathogenic
this can wipe out the GI bacteria which leaves open a lot of GI real estate for _________bacteria to move in and cause disease
gets its first breast feeding
a newborn's GI tract is sterile at birth until it___________
bifidobacterium
breast fed newborn GI tracts become colonized by
honey
one food not to give a newborn for fear of paralysis and respiratory arrest is
NF of the vagina
E.coli, streptococcus and lacobacillus
lactobacills
this has a mutualistic relationship in the vagina
glycogen,metabolizes,lactic acid,pH
the vaginal cells produce_______which________lactobacillus______into_______of the vaginal tract
pathogenic bacterial infections and yeast infections caused by candida albians
the low pH of the vagina prevents _________ and ______ caused by _____
normal flora
scientists have grown germ free mice which lack________