Management and Organizational Studies 3344A/B Lecture Notes - Lecture 5: Exhalation, Cirrhosis, Lymphatic System
16 Apr 2015
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Document Summary
Chemical agents: hazards created by 1 or more chemicals. More than 70,000 chemicals used in na. Multiple chemical sensitivity (mcs), 20th century disease, environmental illness & total. Allergy syndrome are physiological reactions to low level chemical exposures in the environment. Synergistic effects: occur when the result of 2 factors taken together is greater than the sum of the 2. Toxicity: ability to cause injury to human biological tissue. Chemicals exist in 3 states: solid, liquid, gas. Types of contaminants: dust: heavier particles settle out of the air because of gravity, fume: formed by evaporation of solid materials & condenses, smoke, mist, vapour, gas, liquid. Scientific study of poisons/ study of chemical related occupational illnesses. Chemicals can enter body through 4 routes of entry. Respiratory system distributes these contaminants throughout the body during normal air exchange process. Sacs are source of o2 transfer from lungs to blood stream. Contain small cells called macrophages (big eaters)
