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519 Envior Health

week 3

What is traditional defintion of enviornmental health? Study of natural or man made, physical/biological/chemical agents in enviornment and the disease and injuries that they cause.
What is contemporary defintion of enviornmental health? The art and science of protecting against environmental factors that may adversely impact human health or the ecological balances essential to long-term human health and environmental quality.
What is the goal of enviornmental health and protection? Ensure an environment that will provide:optimal public health and safety,ecological well-being, and quality of life for current and future generations.
Why is zero risk not important? Because unnessaccry and unattainable, and often cause disturbance when not achieved.
What are infectious agents? pathogenic microorganisms such as bacteria, viruses, and parasites.Infectious agents are responsible for about 1/3 of all disease-related deaths in the world today.
How do infectious agents come about These agents are introduced into the environment through food, water, and sometimes inanimate objects.
What are irritants? Typically affect the skin and respiratory system.Sulfur Dioxide (SO2), Nitrogen Dioxide (NO2), and formaldehyde are prominent irritants in the air.
What are Respiratory fibrotic agents? Dusts and fibers that are phagocytized and retained in the lung and stimulate a fibrotic response
What is Asphyxiants? Gases that prevent oxygen uptake or prevent the utilization of oxygen by the body.
What are allergens? Herbicides, insecticides, and some metals (nickel) may trigger allergic responses in sensitized individuals.
What are Metabolic Poisons? Insecticides, herbicides, and heavy metals (lead) manufactured as poisons may cause acute or __
What are physical agents? Homicide, occupational accidents, and accidents in the home are other types of exposure to physical hazards.
What are tetrogens? Agents that cause birth defects. Dosage time and size depend on the amount of damage caused.
What are Carcinogens? Cancer causing agents, caused by uncontroled cell growth-metasis.
What is the difference between Initiator and Promotion step in cancer causing agents? Intiator step--causes the mutation in dna and creates precancerous cells. Promotion step--causes profilation of precancerous to grow uncontrollably cells to cause cancer.
Whats the difference between primary, secondary, and tertiary prevention? primary-treating at the source secondary-reducing exposures tertiary- early intervention and cleanup to prevent future problems
What is the difference between prevention and control? Prevention - is during the process and focuses on the why Control- is after problem arises and treatment on after the fact spread.
What is the precautionary principle and when was it established? Says that it is good to be cautious even if there is no full cause and effect relationship. It was developed in the Wingspread conference.
Created by: nhabeeb