HLTC22H3 Chapter 3: Chapter 3 notes
Document Summary
Lack of integration of theories in gerontology: 3 diff. rowe & kahn"s theory of developmental aging & ford and lerner"s developmental systems theory are more models than theories. biological processes fall into 2 categories : those that promote homoestasis & decelerate aging process, those that amplify deviations and accelerate aging process (free radicals) avg life span of humans = 120 yrs. Life span are inversely related to factor such as metabolic rate, length of time to maturation. death gene gene that regulates sudden cell death (also called apoptosis) damage to regulator proteins may be mechanism for cancer (uncontrolled cell profileration) apoptosis mechanism for destruction of cells that have profilerated for specific purposes: e. g t-cells in immune system, and need to be destroyed after having accomplished their task. morf mortality factor which controls the rate of a cell"s aging.
