Unlike Inspiration, Expiration Is a Passive Act Because No Muscular

question 87

Multiple Choice

Unlike inspiration, expiration is a passive act because no muscular contractions are involved. Expiration, however, depends on two factors. Which of the choices below lists those two factors?

• A) the recoil of elastic fibers that were stretched during inspiration and the inward pull of surface tension due to the film of alveolar fluid
• B) the expansion of respiratory muscles that were contracted during inspiration and the lack of surface tension on the alveolar wall
• C) the negative feedback of expansion fibers used during inspiration and the outward pull of surface tension due to surfactant
• D) combined amount of CO₂ in the blood and air in the alveoli

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Definitions:

Monopsony Power

Buyer’s ability to affect the price of a good.

Marginal Expenditure

The additional cost incurred from purchasing one more unit of a good or service.

Average Expenditure

Average expenditure is the amount of money spent per unit of goods or services purchased, calculated by dividing total expenditure by the total number of units bought.

Competitive Quantity

is the quantity of goods produced or services offered based on the equilibrium in a competitive market.