Biological Changes with Aging Flashcards
btwn age of 20 and 80 what is the average loss of height
1-4 inches
why does height decrease in aging
flattening of arch in feet
increased spinal curve
atrophy of back muscles
compaction of vertebra
how does weight change with age
increases
how does distribution of weight change with age
decrease arms and legs
increase in trunk
how is osteogeneisis, absorption of free calcium and reabsorption of ca affected
decreases
how does osteolysis and excretion of free ca affected
increases
how is cartilage in joints affected
thicker
decreased elasticity
decreased collagen
what are structural changes of muscular system
decrease in number of mycoytes
decrease in muscle mass
decrease in size of motor units
what are functional changes in muscular system
decrease in enzyme conc and efficity
loss of muscle strenth
impaired velocity of contraction and relaxation
early onset of fatigue
general observation in older people’s muscular system
symmetrical strength icnreased fasciculation increased rigidity shrinkage/sclerosis of tendons ankylosis of lig and joints
what decreases in skin
sweat glands
sevaceous gland
melanin
colalgen
what are consequences of skin changes
impaired temp regulation dry, flakey skin skin fodls and winkles aging pallor coarser features
pruritus
itching
what percentage of older adults does pruritus affect
2/3s
increases pressure in eye causes
glacoma
