ANTH 337 Chapter Notes - Chapter 13: Weight-Bearing, Left Ventricular Hypertrophy, Dehydroepiandrosterone Sulfate
Document Summary
Fact of existence through time: decline in age-specific fitness components of an organism over time as it experiences internal physiological deteriorations secondary to senescence, senescence. Seen only in living organisms: view senescence as biological and cellular processes that lead to cellular dysfunction, progressive degeneration following a period of development and attainment of maximum reproductive potential that leads to an increased probability of mortality. Life span: typical duration of existence of an individual member of a species span of a species based on the oldest individual of that species. Stochastic process secondary to the terminal differentiation of somatic as opposed to germline cells. Individuals die from both intrinsic and extrinsic factors more frequently as they age. 4 postulates based on evolutionary theory that any proximate model of senescence should explain. Senescence should be found wherever the conditions specified are met and should not be found where these conditions are absent.
