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    Biology
  3. Study Set
    Principles of Human Physiology
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    Exam 17: The Respiratory System: Gas Exchange and the Regulation of Breathing
  5. Question
    Which of the Following Causes a Decrease in the P<sub>O</sub><sub>2</sub><sub>
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Which of the Following Causes a Decrease in the PO2

Question 125

Question 125

Multiple Choice

Which of the following causes a decrease in the PO2 of air as it enters the conducting zone of the lungs?


A) the increasing PCO2
B) the consumption of oxygen
C) decreasing alveolar PO2
D) humidifying the air
E) warming of the air

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