Unit 7 Flashcards
(67 cards)
What age does late adulthood include?
from age 65 til end
What are some myths about old people?
they have entered a period of deterioration and dependency, are no longer able to learn and their families isolate them in nursing homes
How do we best view the late adulthood period?
as an extension of earlier periods - not a break with them
how did life-expectancy change?
in 1900: just under 50 years
in the US today: 76-78.8 for men and 81 for women
What are factors that slowed biological aging?
improved nutrition, medical treatment, sanitation and safety
what is the difference between men and women and life expectancy?
women outlive men by an average of five years
-> likely reason: protective value of females extra X chromosome, reduced risk-taking, less aggression
What can Length of life and, especially, average healthy life expectancy be predicted by?
a countries health care, housing and social services along with lifestyle factors
What influences life longevity?
longevity runs in families, but environmental factors become increasingly important after age 75 to 80.
What do scientists see as the limit of maximum lifespan?
122
How does the nervous system change in late adulthood?
- neuron loss throughout cerebral cortex - greater shrinkage in the frontal lobes (especially prefrontal cortex and corpus callosum)
- cerebellum and hippocampus also loose neurons
- autonomic nervous system functions less well and releases more stress hormones
How does vision change in late adulthood? What are 2 main points?
Cataracts: cloudy areas in the lens - foggy vision and eventual blindness
Macular degeneration: light sensitive cells in the macula break down - central vision blurs (leading cause of blindness)
-> 10% of 65-74 year old, 30% of 75-85 year old
How does hearing change in late adulthood?
hearing impairments more common than visual impairments
- loss of ability to hear high frequency sounds
-> difficulties with word discrimination and problems hearing under noisy conditions
-> decline in speech perception has greater impact on life
How does sleep change in late adulthood?
Older adults find it harder to fall asleep, stay asleep, and sleep deeply.
-> The timing of sleep tends to change: earlier bedtime and earlier morning wakening
They become “morning people”
what is sleep apnoea?
condition in which breathing ceases for 10 seconds or longer - brief awakenings
-> 45% of older adults affected
How does the physical appearance change in late adulthood?
aging more noticeable
-> white hair, wrinkled and sagging skin, age spots, and decreased height and weight
what contributes to aging signs?
the sun, long-term alcohol use, cigarette smoking and psychological stress
How does Mobility change in late adulthood?
mobility diminishes
-> muscle strength declines, bone strength deteriorates (reduced bone mass), strength and flexibility of the joints and the ligaments and tendons diminish
what increases towards end of life?
illness and disability
-> heart disease and cancer leading causes of death
What is primary aging?
biological aging
-> genetically influenced (all members of our species, not in context with overall good health)
What is secondary aging?
declines due to hereditary defects and negative environmental influences
-> poor diet, lack of exercise, disease, etc.
What are frail older adults?
people with extreme infirmity who display wasted muscle mass and strength, weight loss, severe mobility problems, and perhaps cognitive impairment
What plays bigger role, primary or secondary aging?
secondary aging
what is widespread among older adults, especially women?
osteoarthritis and rheumatoid arthritis
-> type 2 diabetes also increases
What do brains of those with Alzheimers far more likely to contain at autopsy?
extensive neurofibrillary tangles
-> stringy masses of tissue that appear to clog connections between neurons surrounded by plaques