HSCI 20200 Lecture Notes - Lecture 3: Exhalation, Biotransformation

• School: Purdue University
• Department: Health Sciences
• Course: HSCI 20200
• Professor: Freeman Jennifer

Document Summary

Essentials of environmental, occupational, and radiological health sciences (hsci 20200) Hazards influencing human disease/condition: clean, healthy living, expanding health impacts/diseases b. i. Ex. cancer: understand health hazards, study exposures d. i. Ex. sound waves, radiation, light energy, thermal energy a. ii. Health effects: increase in heart rate, stress hormones, blood pressure a. iv. Microorganisms: bacteria (live outside organism) and viruses (dependent on living organism) a. iv. 3. All chemicals are toxic, depends on the amount humans are exposed to a. v. 3. Toxicity- inherent capability to cause injury to a living organism (especially to the organs) a. v. 3. a. Toxicology: need to have knowledge in: pharmacy, physiology, chemistry, epidemiology, pathology, biochemistry, and medicine, chemical health hazards b. i. Highly toxic chemical- only a small amount is present in body b. ii. Physical and chemical properties b. iv. 1. a. b. iv. 1. a. i. halogens- (elemental form) toxic, strong oxidizers, Inorganic: chemically reactive b. iv. 1. a. ii. metals: ex. cadmium, lead, mercury b. iv. 1. b. b. iv. 1. b. i. Absorption- into the body and through biological barrier. Excretion: through kidney (also through exhalation, sweat, feces) b. iv. 3. f. i.