Which of the Following Mechanisms Is Responsible for Maintaining a Normal

question 12

Multiple Choice

Which of the following mechanisms is responsible for maintaining a normal PaCO₂ near 40 mm Hg during heavy exercise?

• A) \( \dot{v} \) A normally increases such that it eliminates CO₂ at a rate proportional to its production.
• B) \( \dot{v} \)A normally increases such that it increases O₂ at a rate proportional to CO₂ production.
• C) \( \dot{v} \) A normally increases such that it eliminates CO₂ without increasing its production.
• D) \( \dot{v} \) A normally remains stable such that CO₂ elimination is proportional to its production.

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Definitions:

Preservation

The act of maintaining or safeguarding something in its original or current state to prevent decay or destruction.

Efficient Outcome

A situation where resources are allocated in the most effective manner, leaving no room for improvement without making someone worse off.

Marginal Social Benefit

The additional benefit to society from consuming one more unit of a good or service.

Nonrival Good

Good for which the marginal cost of its provision to an additional consumer is zero.