Chapter 17 and 18 Flashcards
Centenarian
Someone who lives to be 100 or older
Geronotology
The scientific study of aging
Canadian longitudinal study on aging
Giant test with over 50,000 people to see how old they live and various factors that kill them off
The 3 subgroups
Young-old
Old-old
Oldest-old
Young-old
60-75
Old-old
75-85
Oldest-old
85 and up
The maximum life span is about
120 years
Senescence
Physical changes and declines associated with aging
Hayflick limit
The theoretical proposal that each species is subject to a genetically programmed role limit, after a cell can not longer replicate itself
Telomere
At the tip of each chromosome is a mechanism to server as a time keeping mechanism
Cross linking
The formation of undesirable bonds between proteins or fats
Free radicals
Molecules or atoms that possess an unpaired electron
Cellular damage
The organisms inability to repair breaks in DNA strands results in a loss of cellular function, leading to age
In the absence of ________, and organism would waste away once the existing adult cells had reached the ______________
Stem cells
Hayflick limit
The _____ determines the maximum Lifespan of different species
Genotype
The variation in longetivity affected by the accumulation over time of epigenetic errors that ______________________
Compromise adult stem cell function
Functional status
Measure of an individuals ability to perform certain roles and tasks, particularly self help tasks and other chores of daily living
Daily living tasks are grouped into two groups. What are they?
Activities of daily living
Instrumental activities of daily living
Activities of daily living
Bathing, dressing, using the toilet, etc
Instrumental activities of daily living
Includes doing housework, cooking, and managing money
Frail elderly
Seniors who’s physical and cognitive impairments are so severe they can not care for themselves
Majority of older Canadian adults regard their health as
Good or excellent
____ is the single largest factor determining the trajectory of an adults physical or mental status over the years beyond _____
Health
65
The physical problems or diseases that are most likely to contribute to some functional disability in late adulthood are:
Arthiritis and hypertension
As much as half of the decline in physical (and even cognitive) function can be prevented through:
Improved lifestyle, especially exercise
_________ is more important in _____ than in _______
Physical exercise
Later years than younger years
Four major changes occur in the brain during the adult years. What are they?
Reduction of brain weight
Loss of grey matter
Decline in density of dendrites
Slower synaptic transmission speeds
Synaptic plasticity
The redundancy in the nervous system that ensures it is nearly always possible for a nerve impulse to move from on neuron to another or from a neuron to another type of cell
Losing ____ is not only primary agin, but is linked to _____
Dendrites
Education
Loss of dendrites results in the ______ of synaptic speed and therefore slowing in ___________
Slowing
Reaction time
Tinnitus
Persistent ringing in the ears
Prebyopia
Farsightedness
An enlarged ________ on the retina reduces field of vision
Blind spot
The pupil does not widen or narrow as much or as quickly, resulting in more difficulty seeing at _________ and responding to ___________________
Night
Rapid changes in brightness
Diseases of the eyes include
Cataracts, glaucoma, or macular degeneration
The ability to hear _________ sounds is diminished, especially under ___________
High-frequency sounds
Under noisy conditions
_____ lose more hearing that ____. This is due to their exposure to loud noises at ______
Men
Women
Work
___________ is associated with social and psychological problems
Severe hearing loss
The ability to taste the 5 basic flavours does not ____________
Decline over the adult years
The sense of _____ clearly deteriorates in old age
Smell
A loss of sensitivity to _____ can have health issues such as burns or hypothermia
Touch
Satiety
Feeling of fullness that follows a meal
General slowing of brain activity interferes with older adults retrieval of the:
Knowledge needed to complete tasks
More frequent awakening occurs after age ___
65
Older people are more likely to wake _____ and go to bed _____
Earlier
Earlier
Imparied ____ may result in a constant feeling of hunger that cause over eating
Satiety
Older adults fall more often due to ______. Such falls result in more _________
Osteoporosis
More injuries
______ declines from middle adulthood to late adulthood for many reasons
Sexual activity
Reasons for reduced sexual activity
Decreasing testosterone in men
State of overall health
Medication side effects
More than ___% of adults continue to be sexually active in ole age
70
Dementia
Neurological disorder involving problems with memory and thinking that affect an individuals emotional, social, and physical functioning