Which of the Following Statements Is True About the Effects

question 15

Multiple Choice

Which of the following statements is true about the effects of aging on the pulmonary system?
1) Alveolar septa gradually deteriorate.
2) The number of alveoli gradually decreases.
3) Loss of alveolar walls reduces the surface area for gas exchange.
4) Smooth muscle fibers in the lungs are progressively replaced with fibrous connective tissue.

• A)1 and 3
• B)2 and 4
• C)1, 2, and 3
• D)1, 3, and 4

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Definitions:

Social Security

A government program that provides financial assistance to people with inadequate or no income, especially the elderly, disabled, and families with dependent children.