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Microbiology
Test # 3
13
Biology
Undergraduate 2
03/18/2012

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Cards

Term
Everything has something else living on them
our bodies 10:1
normal floral
Definition
normal flora
protective
take up space
take up food
produce growth inhibitor
opportunists- normal flora
-take advantage of change
location-intestine>peritoneal cavity
neighbors- broad spectrum antibiotics
immune status- immunocompromised
Term
relationship
Definition
commensalistic- one benfits other neutral
mutualistic- both benefit
parasitic- one benefits at others expense
Term
Where find pathogens
Definition
Humans- sick people
- carriers- not appear ill
Term
Animals- zoonoses- transmitted from animal to man
Definition
Direct contact w/
animal- lick face
animal waste-toxoplasmosis
animal contaminated food/water- mice/grains
insect vectors-malaria- mosquitoes
as contaminated food- trichinosis-pork
Term
soil and water

Routes of transmission
Definition
contact, vehicles, vectors
Term
contact
Definition
direct- source to host
- person to person
Term
indirect- source
Definition
>intermediate>host
- fomite- non-living intermediate
tissue, cups, towell, etc
Term
Droplet-short distance
Definition
cough, sneeze, talk
Term
vehicle- uses a medium
Definition
water, food, air, blood
Term
vector- uses a living carrier
Definition
often-arthropods- jointed foot/exoskelton roughly think insects
Term
mechanical- just carried- no relationship with the vector
Definition
bottom foot fly
Term
biological
Definition
lives/reproduces in/on vector
- may/may not make vector ill
Term
Portals of exit
Definition
respiratory- nose/mouth- cough sneeze
gastrointestinal- feces, saliva
urogenital-sexuallytransmitted, urine
skin/wound drainage- blood
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