HLTHAGE 1BB3 Chapter Notes - Chapter 5: Maximum Life Span, Sarcopenia, Senescence
2 Apr 2016
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Document Summary
Maximum life span (reflects survival potential ) has not changed whereas life expectancy has increased. The study of personal health and illness works to understand changes in the body that come with age and how to apply this knowledge to extend human life. Current life expectancies: males 79, women 83. The gradual and progressive decay in physical function that begins in adulthood and ends with death. Intrinsic aging: changes within the body due to normal life (decreased lung capacity) 1)takes place in all members of a species: basic to the organism, progressive, leads to a decline in physical function. Senescence: normal decline that takes place in the body over a period of time. Extrinsic aging: changes due to external circumstances (effects of smoking) (will differ a bit depending on person) Programmed theories (action of person"s genes cells) Normal part of growth and development: genetic theory. Biological clock in each cell genes effect longevity by altering biological makeup of organism.
