Human Development evolve Flashcards
Adulthood is divided into three age groups:
young adulthood, middle adulthood, and older adulthood
Young adulthood spans the ages of
18 to 34 years
middle adulthood includes people
35 to 65 years of age
older adulthood includes those
66 years of age and beyond.
Biologic aging is also called
senescence
senescence is defined as
normal physiologic process that occurs at the cellular and molecular levels and is universal and irreversible
some organs may
age faster than others
Life expectancy is
the average number of years of life remaining at a given age
Life expectancy varies by
gender
culture
socioeconomic status
geographical location.
aging could contribute to
loss of hormones, as the endocrine system gradually fails
decline in estrogen hormone causing menopause
a drop in growth hormone causing muscle and bone mass loss
additional fat
thinning of the skin
decline in cardiovascular function
Wear-and-Tear Theory of Aging proposed
that the body wears out from use
how does diet and physical exercise help with aging
it can slow it down
all cells endure the
aging process
hormone therapy can
reduce the loss of growth hormone, but side effects include risk of cancer
Wear and tear include ______ and on the________ _________
organs and on the cellular level
Loss of cellular function leads
hypertrophy and to hyperplasia of remaining cells
Free radicals are
one cause of cellular abnormalities
Free radicals are
naturally occurring, highly reactive chemicals that form in the presence of oxygen
Free radicals are related to many disorders of aging including
cancer
cataracts
heart disease
arthritis
what can limit free radicals-related damage
Antioxidants,
vitamins C and E
beta carotene
Cross-Linking Theory of Aging is referred to as
the Glycosylation Theory of Aging
The Cross-Linking Theory of Aging suggests that
over time, protein fibers that make up the body’s connective tissue form bonds, or links, with one another
When these normally separate fibers cross-link
tissue becomes less elastic
less elastic tissue causes
loss of flexibility
clouding of the lens of the eye
clogged arteries
damaged kidneys