Question

1. which aging process impairs the respiratory system and oxygenation?

decreased lung tissue elasticity
increased number of alveoli
increased cough receptor sensitivity
increased oxygen retention

1. what is the best physical benefit of regular physical activity for older adults?

increasing socialization opportunities
maintaining balance and flexibility
improving confidence and self - esteem
accomplishing a weight - lifting goal

Explanation:

Question 4

During aging, lung tissue elasticity decreases. This affects the ability of the lungs to expand and contract, reducing the efficiency of gas exchange (oxygenation). Increased alveoli number, increased cough receptor sensitivity, and increased oxygen retention are not typical effects of aging on the respiratory system; in fact, aging usually leads to a decline in respiratory function, so decreased lung tissue elasticity is the correct choice.

For older adults, regular physical activity helps in maintaining balance and flexibility, which is crucial for preventing falls and maintaining mobility. Increasing socialization opportunities is more of a social benefit, improving confidence and self - esteem is a psychological benefit, and accomplishing a weight - lifting goal is a specific fitness goal rather than the best overall physical benefit. Maintaining balance and flexibility directly relates to physical health and functional ability in older adults.

Answer:

Decreased lung tissue elasticity

Question 5