HLTC22H3 Chapter 3: Chapter 3
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If change occurs, mechanisms exist for countering that change and returning the organism to a steady state y ex. Biological theories of aging y different ways of categorizing biological theories of aging y group these into genetic, molecular/cellular and system level theories. Lipofuscin y aging cells accumulate waste matter called lipofuscin, a dark mixture of lipoproteins and various waste products y found in all cells and increases with age y. Illness with aging reflect these problems in homeostasis such as orthostatic hypotension and diabetes) y aging is also associated with changes in temporal organization of physiological rhythm. Stress y exposure to stress, physiological and psychological may increase rate of aging in various organ systems as stress related hormones and catecholamine can have toxic effects. Psychosocial theories of aging y figure 3. 1 presents a flowchart of the intellectual history of the major theories of adult development. y figure 3. 1 intellectual history of theories of adult development.
