What Primarily Pumps the Lungs for Inhalation and Exhalation

question 36

Multiple Choice

What primarily pumps the lungs for inhalation and exhalation?

• A) The diaphragm working with the ribs
• B) The diaphragm alone
• C) The ribs alone
• D) The heart, such that heart rate and breathing rate are coordinated
• E) The mouth and nose

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Definitions:

Opportunity Cost

The benefit foregone by choosing one alternative over another.

Cash Outlay

The actual expenditure of cash or cash equivalent for purchases or services.

Alternative Investments

Financial assets that do not fall into the conventional categories of stocks, bonds, or cash, including commodities, real estate, and hedge funds.

Opportunity Cost

The cost of foregoing the next best alternative when making a decision or choice.