MIcro, Quiz 1

Medical asepsis is the reduction of the number of disease causing microbes.

The "clean technique" : hand washingisolation technique disinfection of equipment

Surgical asepsis is the prevention of pathogens from entering an open wound.

Both organisms benefit.Example: bacteria in human colon.

One organism benefits. Other organism is neutral. Example: staphylococcus on skin.

One organism benefits. Other organism is harmed. Example: tuberculosis bacteria in human lung.

Resident bacteria and transient bacteria.

Resident microbiota:are a part of the normal microbiota throughout life.are mostly commensal.

Transient microbiota:remain in the body for short periodscannot persist in the body competition from other microorganisms elimination by the body's defense cells chemical or physical changes in the body

Much of the resident microbiota establishes itself during the first months of life and during birthing.

Opportunistic pathogens are normal microbes. Conditions that provide opportunities for pathogens Immune suppression Changes in the normal microbiota - changes in relative abundance of normal microbiota may allow opportunity for a member to thrive and cause disease Introduction of normal microbiota into unusual site in the body

A sites where pathogens are maintained as a source of infection.

Animal reservoir, human carrier, nonliving reservoir

Diseases that are naturally spread from their usual animal host to humans

Direct contact with animal or its wasteEating animalsBloodsucking arthropodsHumans are usually dead-end host to zoonotic pathogens