HSCI 202 exam 1

HSCI 202 exam 1 - Lecture 1-Environmental health= field of...

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Unformatted text preview: Lecture 1-Environmental health= field of science that studies how the environment influences human health and disease-Environment= Natural + Man-made + Social -Harmful algal bloom(HAB)- occurs when certain types of algae grow quickly in water, forming visible patches that may harm the health of the environment, plants, and animals -Red tides- harmful marine algae (Karenia brevis) that grow quickly making the ocean appear red or brown-eat shellfish with this algae may have neurologic and gastrointestinal symptoms -Pfiesteria piscicida- found in large quantities of fish -affects on people: headaches, confusion, eye ir ritations, and skin rash-1 st Public Health Law= 1848-1 st wave of Environmental concern= synthetic rubbers, pesticides, plastics -2 nd wave of Environmental concern= establishment of natural parks, concerned with toxic chemicals dumped by industries (Silent Spring by: Rachel Carson)-3 rd wave of Environmental concern= Focus on sustainable development Basic Requirements for a Healthy Environment:-Clean air-Safe and Sufficient water-Adequate and safe food-Safe and peaceful settlements-Stable global environment-Epidemiology= field of science that carries out health measurements on a population-Health indicators= local registries (hospital records) Lecture 3 Antropogenic- (human made) environmental health hazards-Physical health hazards= sound waves, radiation, light energy, thermal energy, and electrical energy-Biomechanical health hazards= getting injured at home, work, on the road-Psychosocial health hazards= stress and anxiety-Biological health hazards= #1 problem with undeveloped nations (disease)-bacteria #1 bio health hazard-Chemical Health Hazards= -toxicity= defined as inherent capability to cause injury to a living organism -Dose of chemical health hazards= length, duration, and frequency of exposure [Chemical Classifications]-inorganic- metals-organic- hydrocarbons, longer the carbon string the more fat soluble Ex: alcohols: ethanol and methanol Organic solvents: benzene and toluene -Routes of Exposure: Released into environment naturally or man-made process Air, soil, and water Exposure [Absorption of chemicals is most rapid through the lungs]...
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This note was uploaded on 11/17/2010 for the course HORT 306 taught by Professor Staff during the Spring '08 term at Purdue.

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HSCI 202 exam 1 - Lecture 1-Environmental health= field of...

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