Normal Physiological Change Associated With Aging Discussion
Question
Reduced ________ is a normal physiological change associated with aging.
Multiple Choice
vulnerability to cancer
bruising
lung capacity
heartburn
Expert Answer
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Step 1/3
AGEING
Ageing can be defined as an time related deterioration of physiological function necessary for survival and fertility
Step 2/3
Explanation:
There are so many physiological changes occur during aging process such as
The cardiac output decreases, blood pressure increases and arteriosclerosis develops. The lungs show impaired gas exchange, a decrease in vital capacity and slower expiratory flow rates. The creatinine clearance decreases with age although the serum creatinine level remains relatively constant due to a proportionate age-related decrease in creatinine production. Like this all system changes occur during aging
Step 3/3
Explanation:
Respiratory system changes during ageing reduces vital capacity of lung so lung capacity reduces during ageing process
Respiratory system changes during ageing
Elasticity and size of alveioli increases
Chest muscle stiffness increases
Vital capacity reduces and residual volume increased
Decreased elasticity of lung due to collagen cross linking
Final answer
Answer. Reduced lung capacity
Due to reduced no of functional alveoli and reduced expansion of lung due to changes in thoraxic musculoskeletal system
Vital capacity reduces 20%
Residual volume increase 50%
FEV1 drops 30ml/year during adult life
THESE CONTRIBUTES TO REDUCED LUNG CAPACITY DURING AGEING PROCESS
Normal Physiological Change Associated With Aging Discussion