How Has the Avian Lung Adapted to the Metabolic Demands

question 31

Multiple Choice

How has the avian lung adapted to the metabolic demands of flight?

• A)Airflow through the avian lung is bidirectional.
• B)There is more dead space within the avian lung so that oxygen can be stored for future use.
• C)Countercurrent circulation is present in the avian lung.
• D)Gas exchange occurs during both inhalation and exhalation.

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Definitions:

Incremental Profit

The additional profit derived from making changes to the business operations, such as increasing production or sales.

Cash Payback Period

The duration of time it takes for an investment to generate enough cash flow to recover its initial cost.

Net Income

The total earnings of a company after all expenses and taxes have been deducted from revenues, indicating profitability.

Straight-Line Rate

A method of calculating depreciation by dividing the difference between an asset's cost and its salvage value by the number of years it is expected to be used.