SOC334H5 Chapter Notes - Chapter 5: Cardiovascular Disease, Married People, Online Banking
Document Summary
Biological aging: biologists and physiologists distinguish between two types of aging: Intrinsic aging: changes within the body due to normal wear and tear, genetic mutation, and other internal sources of change, including a decrease in lung capacity, hardening of the arteries, and arthritis. Theories of biological aging: at least two types of theories exist: programmed theories and error theories, programmed theories. These theo(cid:396)ies look at the a(cid:272)tio(cid:374) of a pe(cid:396)so(cid:374)"s ge(cid:374)es to fi(cid:374)d the source of aging. They say that the same processes that promote growth and health also lead to senescence and death. Ea(cid:396)l(cid:455) i(cid:374) life this p(cid:396)o(cid:272)ess (cid:272)o(cid:374)t(cid:396)ols g(cid:396)o(cid:449)th a(cid:374)d p(cid:396)odu(cid:272)es normal development. These theories view aging as a by-product of errors or mistakes within the body. Muscle and bone content decrease with age. With age the number of muscle fibres declines and the remaining neurons become less efficient leads to muscle weakness. Can lead to decreased mobility and increased dependence later in life.
