where one benefits the other receives no significant benefit or harm
where one benefits and one is harmed
define Indigenous microbiota
microbes which live in/on us indefinitely in commensal relationships
3 aspects of Indigenous micrbiota populations?
-Permanent populations (resident, more or less)
- Species & pop size mary from person-person
-can change over time
list 3 types of commensal indigenous microbiota on humans
Bacteria, fungi, protists
-we have more bacteria in/on our bodies than human cells.
define Transient microbiota
Microbes that we pick up from our environment
what types of relationships of transient microbiota do we pick up?
*we don't want sterile hands, because of good bacteria.
What can the following circumstances cause:
-outgrowth of indigenous microbiotia
-loss of indigenous microbiota-breakdown or suppression of immune system
-medical treatment (antibiotics, anti-inflammatories, immunosuppressors etc)
-injury: burns, wounds, surgery etc
Indigenous microbiota locations
Anywhere where your body interacts with the environment.
The following systems are all places where we can find___
The following environments ____ for microbes to live.
-inhibitory substances (oils, lysozyme)
are hostile environments, or make it hard for microbes to live.
Which body systems does she mention are partially covered in microbiota
Genital, Urinary, & respiratory
Body systems completely covered in microbiota
digestive and skin or integumentary.
2 subsets of microbacteria that adapted to live on skin
-gram-negative and fungi
established microbial growth
Indigenous microbiota colonize the body, and can cause ____ under certain conditions
2 main parts of respiratory system
1) Upper respiratory tract: mouth nose throat.
2) Lower respiratory tract: lungs
where are microorganisms naturally covering in the two parts of the respiratory tract?
Upper respiratory tract. The lower tract should always be sterile (otherwise it's infected).
-aerobic and anaerobic regions
-nutrient (esp. for fermentation)
-Massive numbers and variety of microbes
An excellent environment for many microbes
What 5 body systems should be without indigenous microbiota, or should be sterile?
Pathogens are described as ___ ____, ___ part of indigenous microbiota, & organisms ___ of ___ ___ in host.