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:

Variable Manufacturing Costs

Costs that fluctuate directly with the level of production output, such as the costs of raw materials and direct labor.

Selling Price

The amount a company charges for its product or service, which can impact demand, revenue, and profitability.

Direct Materials

Raw materials that can be directly identified with the production of specific goods or services.

Variable Cost

Costs that vary directly with the level of production or volume of operations.