APES Human Hazards1
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APES Human Hazards1
Hazards to human health
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Risk assessment verus Risk management

-Risk- a measurement of probability where a harmful event caused from exposure to a chemical or physical agent may appear under specific conditions

-Risk assessment- the identification and quantitative processes of a risk from a physical or chemical agent

-Risk management-decision making process where you select steps to reduce the risk to an acceptable level

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Ability to detoxify soil

This video talks about the health of our soil for food production; but in order to reach the new healthy soil, this company uses mycorrhizal chemical to detoxify or replinish the soil.  It states that no harmful or toxic chemicals are used throughought the proccess.  This video is an example of how organisms ability to detoxify can benefit our society in a positive way. 

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What makes compounds harmful to humans?

What makes compounds harmful to humans? | APES Human Hazards1 | Scoop.it

Certain compounds can be harmful to humans if they fall under specific characteristics.  If terms such as dose, exposure, age, detoxify ability, sensitivity, and synergistic effect are offset from the normal level, it has negative effects on human health. 

For example, dose is a measurement of exposure.  The higher the dose, the greater likelihood of an effect; or the synergistic effect where the response of one substance worsens the effect of another. 

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Defintions: Infection, disease, pathogen, and vector

-Infection-an invasion followed by multiplication of microorganisms in a body part or tissue that can cause disease through a variety of different toxic mechanisms.

-Disease-a disorderly or mis-functioning part of the body caused by genetic or development issues, infections, poisons, nutritional deficiency, toxicity, environmental factors, illness or sickness

-Pathogen- An agent that can cause disease, commonly found as a living microorganisms such as bacteria or fungus

-Vector- an organism, for example a mosquito or tick, that carries disease infected microorganisms from one host to another

 

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Dose-response analysis

Dose-response analysis | APES Human Hazards1 | Scoop.it

This relationship describes an effect on an organism caused by different levels of exposure or dosage to a chemical level after a certain amount of time. 

-LD50- (Lethal Dose 50%) the amount of substance required to kill half of the test population

-ED50- the dose of a drug that is 50% effective for the population that is exposed to it

-Threshold dose- lowest amount or exposure level of a toxic substance where a specific and measurable effect is manigable

-Acute effect- Severe sympotoms develop quickly and lead to severe health problems, this can be caused by expousre to harmful substances

-Chronic effect- symptoms develop slowly, possibly due to long or consitant exposure rates or low concentrations of hazardous materials

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Toxicity

Toxicity | APES Human Hazards1 | Scoop.it

Toxicity is the degree to which something is capable of harming a living/non-living organism; it is also dose dependent. Whereas a toxin is a poisonous substance usually produced by living organisms capable of causing disease, but can also neutralize substances in the body.

 

http://en.wikipedia.org/wiki/Toxicity

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