Summary: Ch 17

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  • 1 CH 17

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  • Reasons there are differences in life expediencies

    health conditions and medical care
    ethnic differences
    gender
  • Individuals 100 years and older

    Centenarians
  • Increased rate of centenarians each year by __

    7 percent
  • Increased number of centenarians due to

    diet
    low-stress lifestyle
    caring community
    activities
    spirituality
    compression of morbidity
  • Compressing the time horizon between the onset of chronic illness or disability and the time in which a person dies

    Compression of morbidity
  • Biological theories of aging include

    Evolutionary theory
    Cellular clock theory
    Free-radical theory   
    Mitochondrial theory
    Hormonal stress theory
  • Benefits conferred by evolution decline with age because natural selection is linked to reproductive fitness

    Evolutionary theory
  • Age makes cells less capable of dividing; telomeres

    Cellular clock theory
  • Tips of chromosomes; DNA sequences that cap chromosome

    Telomeres
  • Damaging can lead to a number of disorders, including cancer and arthritis

    Free-radical theory
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