:

Which of the following statements is true about the aging respiratory system?

By age 70, the annual rate of decline in Forced Expiratory Volume in one second (FEV1) can double compared to the rate seen in middle-aged adults. This reflects the normal, gradual changes that occur over time, prompting the question: which of the following statements is true about the aging respiratory system? The answer involves several interconnected physical and physiological shifts that affect breathing efficiency and reserve capacity.