Social Studies, 19.12.2019 04:31 hdkdkdbx

Age-related changes in the respiratory system may cause 1. decrease in vital capacity of as much as 35% by age 70 due to decreased tissue elasticity. 2. an increased incidence of pneumonia and bronchitis because of decreased alveolar macrophage activity and ciliary action in the respiratory tract. 3. an increase in tidal volume due to damage to alveoli and decreased surfactant production.

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