Test 1 Flashcards
What is Geriatrics?
the branch of medicine, which treats all problems peculiar to old age and the aging.
Aging is…
a process of gradual and spontaneous change, resulting in maturation through childhood, puberty, young adulthood and then decline through the middle and late life.
What is senescence
the process/condition of growing old, & ultimately leads to incompatibility w/ life and terminates in death.
Gerontology is…
the scientific study of problems of aging in all aspects, clinical, biological, historical and sociological.
Ederly (young-old) fall into what age range?
65-75
Old fall between the ages of…
76-90
Very old (old old) involves what age range?
over 90
What is life span?
the length of longest-lived member of a species.
What is life expectancy?
the length of time an average particular individual can expect to live, depending on his/her current age.
What is Hayflick’s limit/phenomenon?
cells lose their ability to divide over time. this is a limit to cellular replicative capacity. This limit appears to be 50 cell divisions.
What is apoptosis?
another way for cells to die. it appears to be a highly regulated orderly process by which cells commit suicide and is usually triggered by a physiologic signal.
what is programmed endpoint theory (Cellular duplication theory)?
Predetermined end, cells age and dies. Hayflick’s limit.
What is Somatic-mutations theory?
age causes mutations in cells which leads to young cells stopping duplication.
What is Free-Radical Theory?
Aging results from the random damage to the cells by highly reactive molecules called free radicals.
What is wear and tear theory?
cells and thus individuals wear out from continued use.
The fastest growing segment of the population is the?
“old-old” (those over 90)
What 2 main events are responsible for the population as a whole aging?
An increase in life expectancy and the aging of the population known as “baby-boomers” (those born after WWII from 1945-1966)
Women typically outlive men by how many years?
7
By age ___the ratio of men to women is
even
What is the dependency ratio?
the ratio of the number of persons in economically dependent segments of the population to the number of persons in economically productive segments of the population.
African Americans currently live on average how many years less than their white counter parts?
5-6 years
which group has the shortest life expectancy?
Native Americans
What age does social security kick in?
67
when can you join AARP?
50