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519 Envior Health
week 3
| Question | Answer |
|---|---|
| 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
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