BIOL355 Lecture Notes - Lecture 3: Infant Mortality, Centenarian, Senescence
3 Feb 2016
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Muscle strength, bone mass, coordination, risk survival risk death . Changes are deleterious (functional capacity ) risk death risk survival . More ppl are now >65, than under 25. Baby boom generation (76 million) increase in centenarian (over 100 yrs old) 4 major factors contributed to increased elderly (1946-1964: high birth rates before 1920, but more recently baby boomers, infant mortality , l. e. > people living longer (rectangularization: birth rates . Average age death for individual of given population from all causes of mortality (both age-dependent/independent) Sum of all ages at death / # of individuals in that population who died. Not fixed, but cannot exceed life span. Factors that can affect the l. e are: Historical period in which you were born and lived. Gender (women consistently have higher l. e by 5-7 yrs) The age at death of the longest lived individual of a species. Fixed for each species (differs from species to species)
