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Symbiosis
The living together of unlike organisms.
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Types of symbiosis:
- -Mutualism*
- -commensalism*
- -parasitism*
- -competition
- -neutralism
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Mutualism is where
both organisms benefit
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Commensalism is
where one benefits the other receives no significant benefit or harm
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Parasitism is
where one benefits and one is harmed
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define Indigenous microbiota
microbes which live in/on us indefinitely in commensal relationships
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3 aspects of Indigenous micrbiota populations?
- -Permanent populations (resident, more or less)
- - Species & pop size mary from person-person
- -can change over time
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list 3 types of commensal indigenous microbiota on humans
Bacteria, fungi, protists
-we have more bacteria in/on our bodies than human cells.
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define Transient microbiota
Microbes that we pick up from our environment
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what types of relationships of transient microbiota do we pick up?
- -commensal (most)
- -parasitic
- *we don't want sterile hands, because of good bacteria.
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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
opportunistic pathogens
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Indigenous microbiota locations
Anywhere where your body interacts with the environment.
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The following systems are all places where we can find___
-lymphatic,
-indocrine
-circulatory
-nervous (eyes)
-muscular
-skeletal
-integumentary (skin)
-Reproductive
-Urinary
-Respiratory
-Digestive
microbiota
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The following environments ____ for microbes to live.
-Dry, Salty
-extreme temperatures
-inhibitory substances (oils, lysozyme)
are hostile environments, or make it hard for microbes to live.
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Which body systems does she mention are partially covered in microbiota
Genital, Urinary, & respiratory
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Body systems completely covered in microbiota
digestive and skin or integumentary.
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2 subsets of microbacteria that adapted to live on skin
- -gram-positive bacteria
- -gram-negative and fungi
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established microbial growth
colonization
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detrimental colinization
infection
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Indigenous microbiota colonize the body, and can cause ____ under certain conditions
-staphylococcus aureus:
-Propionibacterium___:
opportunistic infections
- -wound infections
- -acne: pimples
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2 main parts of respiratory system
- 1) Upper respiratory tract: mouth nose throat.
- 2) Lower respiratory tract: lungs
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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).
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what's described:
-warm, moist
-aerobic and anaerobic regions
-nutrient (esp. for fermentation)
-Massive numbers and variety of microbes
An excellent environment for many microbes
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What 5 body systems should be without indigenous microbiota, or should be sterile?
- 1)Lymphatic
- 2)endocrine
- 3) circulatory
- 4)muscular
- 5) skeletal
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Pathogens are described as ___ ____, ___ part of indigenous microbiota, & organisms ___ of ___ ___ in host.
- -Parasitic symbionts
- -not part of indigenous microbiota
- -organisms capable of causing disease in host
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