Exchanging Oxygen And Carbon Dioxide! Trivia Facts Quiz

10 Questions | Total Attempts: 111

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Exchanging Oxygen And Carbon Dioxide! Trivia Facts Quiz - Quiz

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Questions and Answers
  • 1. 
    Diffusion is the spontaneous movement of gases without the use of any energy or effort and requires a concentration/pressure gradient.
    • A. 

      True

    • B. 

      False

  • 2. 
    Oxygen molecules move (diffuse) from an area of (____________) in the alveoli of the lungs to an area of (____________) into the blood where they bind to red blood cells to oxygenate the body.
    • A. 

      Higher PO2; Lower PO2

    • B. 

      Lower PO2; Higher PO2

    • C. 

      Moderate PO2; Mild PO2

    • D. 

      Mild PO2; Moderate PO2

  • 3. 
    Diffusion capacity is a measure of how well oxygen and carbon dioxide are transferred between the lung and the blood.
    • A. 

      True

    • B. 

      False

  • 4. 
    What is the primary function of hemoglobin?
    • A. 

      Transport carbon dioxide

    • B. 

      Transport oxygen

    • C. 

      Remove nitrogen

    • D. 

      Remove carbon monoxide

  • 5. 
    As air travels through the respiratory tract and becomes humidified (water is added), the PO2:
    • A. 

      Increases

    • B. 

      Decreases

    • C. 

      Stays the same

  • 6. 
    Which of the following does NOT determine partial pressure of O2 and CO2 in the lungs?
    • A. 

      Atmospheric pressure of outside air

    • B. 

      Atmospheric pressure on the moon

    • C. 

      Rate of alveolar ventilation and perfusion

    • D. 

      Humidified air by the upper airway

  • 7. 
    As you expire air the value measured with a PFT device of the PO2 will __________ and the measured value of PCO2 will __________.
    • A. 

      Increase; increase

    • B. 

      Increase; decrease

    • C. 

      Decrease; increase

    • D. 

      Decrease; decrease

  • 8. 
    Diffusion of gas across a fluid membrane (alveolar membrane) can be affected by all of the following EXCEPT:
    • A. 

      Difference in partial pressures of gases

    • B. 

      Surface area of the membrane

    • C. 

      Thickness of the membrane

    • D. 

      Color of the membrane

  • 9. 
    With COPD, some bronchioles are obstructed leaving the alveoli beyond the obstructions unventilated.  (no air flow, some blood flow)
    • A. 

      True

    • B. 

      False

  • 10. 
    To convert carbon monoxide-diffusing capacity to oxygen-diffusion capacity, the value is multiplied by a factor of __________.
    • A. 

      1.23

    • B. 

      10.30

    • C. 

      11.1

    • D. 

      50

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