HDEV 357 || A+ Score Secured.
Intrinsic: correct answers characteristics That occur naturally and universally w all older adults
i.e. sensory changes such as tastes, sounds, etc (within)
Extrinsic: correct answers due to diseases processes, disuse, or environment i.e UV radiation
from the sun, lead water, pollution
Normal aging: correct answers the sum of intrinsic aging, extrinsic aging, and individual genetic
factors
Wear & Tear Theory: correct answers Organisms wear out over time Preprogrammed process
What factors?
Environmental- such as drugs.
Labor type of work i.e. office vs field work
Health - lack of sleep, foods ingested,
Cellular Aging Theory: correct answers Decrease in # of cellular reps with increase of age
Telomeres shorten
Immunological Theory correct answers T cells: lose ability to replicate Immune system loses
ability to fight disease
Free Radical Theory correct answers Progressive + irreversible damage explains loses of
physiological change (oxidative damage) Antioxidants chemical inhibitors that can safely
absorbs extra electrons and prevent Oxygen to damaging DNA
Free radicals damage body w build up antioxidants = fighting free radicals
Mitochondrial DNA mutation theory mutated mtDN accumulate in the body
, Can aging be reversed? correct answers There are growth hormones that can reverse some aging
processes
-Hormone used: Dehydroepiandrosterone (DHEA)
-Scientists convinced they can reverse aging with telomere therapy
-caloric restriction approach: reducing caloric intake by 30 to 50 percent → delays the onset of
pathology
Sarcopenia: correct answers decrease in water + muscle; increase in fat
Changes in skin: correct answers UV radiation, melanin, epidermis, dermis, subQ
Changes in hair: correct answers balding, greyness
Musculoskeletal system correct answers Diminished bone density/ fragile
-Stiff joints bc diminish of cartilage
-Height decrease (max height avg @ 25y/o) = typically lose 3in during aging
-More curved spine Decrease in shoulder width
Kinesthetic system correct answers Orientation in spaces (new + old)
Interconnected w changes in central nervous system
Respiratory System correct answers • Maximum breathing capacity is reduced
-Vital capacity = the max amount of oxygen that can be brought into lungs w deep breath also
declines
Cardiovascular correct answers Structural -- reduction of bulk, replacement of heart muscle w/
fat & loss of elastic tissue and increase in collagen
-Cholesterol (LDL + HDL) indicator of well being
Intrinsic: correct answers characteristics That occur naturally and universally w all older adults
i.e. sensory changes such as tastes, sounds, etc (within)
Extrinsic: correct answers due to diseases processes, disuse, or environment i.e UV radiation
from the sun, lead water, pollution
Normal aging: correct answers the sum of intrinsic aging, extrinsic aging, and individual genetic
factors
Wear & Tear Theory: correct answers Organisms wear out over time Preprogrammed process
What factors?
Environmental- such as drugs.
Labor type of work i.e. office vs field work
Health - lack of sleep, foods ingested,
Cellular Aging Theory: correct answers Decrease in # of cellular reps with increase of age
Telomeres shorten
Immunological Theory correct answers T cells: lose ability to replicate Immune system loses
ability to fight disease
Free Radical Theory correct answers Progressive + irreversible damage explains loses of
physiological change (oxidative damage) Antioxidants chemical inhibitors that can safely
absorbs extra electrons and prevent Oxygen to damaging DNA
Free radicals damage body w build up antioxidants = fighting free radicals
Mitochondrial DNA mutation theory mutated mtDN accumulate in the body
, Can aging be reversed? correct answers There are growth hormones that can reverse some aging
processes
-Hormone used: Dehydroepiandrosterone (DHEA)
-Scientists convinced they can reverse aging with telomere therapy
-caloric restriction approach: reducing caloric intake by 30 to 50 percent → delays the onset of
pathology
Sarcopenia: correct answers decrease in water + muscle; increase in fat
Changes in skin: correct answers UV radiation, melanin, epidermis, dermis, subQ
Changes in hair: correct answers balding, greyness
Musculoskeletal system correct answers Diminished bone density/ fragile
-Stiff joints bc diminish of cartilage
-Height decrease (max height avg @ 25y/o) = typically lose 3in during aging
-More curved spine Decrease in shoulder width
Kinesthetic system correct answers Orientation in spaces (new + old)
Interconnected w changes in central nervous system
Respiratory System correct answers • Maximum breathing capacity is reduced
-Vital capacity = the max amount of oxygen that can be brought into lungs w deep breath also
declines
Cardiovascular correct answers Structural -- reduction of bulk, replacement of heart muscle w/
fat & loss of elastic tissue and increase in collagen
-Cholesterol (LDL + HDL) indicator of well being
