Environmental Health Exam #1latest exam with correct answers 2024.

Define Environmental Health - correct answer - Environment = complex of physical, chemical, & biotic factors that act upon an organism or ecological community & ultimately determine form & survival - Environmental Health = addresses all the physical, chemical, & biological factors external to the person, & all the related factors impacting behaviors -- encompasses control of environmental factors & aims to prevent disease Is environmental health a global issue? - correct answer Yes: pollution crosses boundaries; infectious disease; food safety -- only a small percentage actually tested Define Ecosystem - correct answer - "Dynamic complex of plant, animal, & microorganism communities & the nonliving environment interacting as a functional unit" - Natural systems that function as a unit - The Ecological Model: proposes that the determinants of health interact & are interlinked over the life course of individuals Define Natural Population Fertility Rate - correct answer Keeps populations stable - in the US, about 2.1 births per woman Causes of population growth: increases in fertility, reductions in mortality, migration Understand & estimate the global disease burden attributable to environmental sources - correct answer 25-33% What is meant by "sensitive subpopulations"? - correct answer Very young, women of childbearing age, very old, immune compromised What factors confer sensitivity to examples of these subpopulations? - correct answer - Young: immune systems not well developed, behavioral actions, dependence on others, rapidly growing - Women of childbearing age: concern with child being carried - Old: neurodegeneration, immune system doesn't work as well - Immune compromised: vibrio