Patton: Anatomy and Physiology, 8th Edition
Chapter 27-A: Physiology of the Respiratory System
Test Bank
TRUE/FALSE
1. The major factor that
... [Show More] determines the movement of air into or out of the lungs is a
pressure gradient.
ANS: T DIF: Memorization REF: Page 824
TOP: Mechanisms of Pulmonary Ventilation
2. A primary function of the respiratory system is to supply tissue with adequate oxygen and
to remove carbon dioxide.
ANS: T DIF: Memorization REF: Page 824
TOP: Introduction
3. For air to remain in the lungs, the pressure in the lungs must be equal to or less than
atmospheric pressure.
ANS: T DIF: Memorization REF: Page 824
TOP: Mechanisms of Pulmonary Ventilation
4. Standard atmospheric pressure is usually about 760 mm Hg.
ANS: T DIF: Memorization REF: Page 824
TOP: Mechanism of Pulmonary Ventilation
5. The tendency of the lungs and thorax to return to their preinspiration volume is a physical
phenomenon called elastic recoil.
ANS: T DIF: Memorization REF: Page 831
TOP: Expiration
6. The inspiratory capacity is equal to the sum of the tidal volume and the inspiratory
reserve volume.
Full file at http://testbanksite.eu/Anatomy-and-Physiology-8th-Edition-Test-Bank
ANS: T DIF: Memorization REF: Page 834
TOP: Pulmonary Capacities
7. The amount of air that could be forcibly expired after normal expiration is called the
functional residual capacity.
ANS: F DIF: Memorization REF: Page 834
TOP: Pulmonary Volumes
8. Vital capacity is the sum of inspiratory reserve volume, tidal volume, and expiratory
reserve volume.
ANS: T DIF: Memorization REF: Page 834
TOP: Pulmonary Capacities
9. Anatomical dead space approximates 10% of the tidal volume.
ANS: F DIF: Memorization REF: Page 836
TOP: Pulmonary Capacities
10. With emphysema, the amount of dead space air increases.
ANS: T DIF: Memorization REF: Page 836
TOP: Pulmonary Capacities
11. Anatomical dead space contains air that does not ventilate the alveoli.
ANS: T DIF: Memorization REF: Page 835
TOP: Pulmonary Capacities
12. The anatomical dead space is approximately equal to the same number of milliliters as
the individual’s weight in pounds.
ANS: T DIF: Memorization REF: Page 836
TOP: Pulmonary Capacities
13. The partial pressure exerted by oxygen in a liquid is called oxygen tension.
ANS: T DIF: Memorization REF: Page 838
TOP: Partial Pressure
Full file at http://testbanksite.eu/Anatomy-and-Physiology-8th-Edition-Test-Bank
14. The partial pressure of oxygen in an artery is always lower than the partial pressure of
oxygen in a vein.
ANS: F DIF: Memorization REF: Page 839
TOP: Exchange of Gases in the Lungs
15. Because of tissue layers between alveolar air and the blood supply, arterial blood PO2 is
always less than alveolar PO2.
ANS: F DIF: Memorization REF: Page 839
TOP: Partial Pressure
16. Blood is distributed through the capillaries in a layer so thin that each red blood cell
comes in contact with the alveolar-capillary membrane.
ANS: T DIF: Application REF: Page 840
TOP: Exchange of Gases in the Lungs
17. The partial pressure of a gas in solution is independent of the partial pressure of the same
gas in the environment of the liquid.
ANS: F DIF: Application REF: Page 838 TOP: Partial Pressure
18. Under usual conditions, the partial pressure of oxygen in systemic venous blood is
approximately 87 mm Hg.
ANS: F DIF: Memorization REF: Page 838
TOP: Partial Pressure
19. The PO2 is higher in the femoral artery than in the femoral vein.
ANS: T DIF: Synthesis REF: Page 838 TOP: Partial Pressure
20. The residual volume is increased with a pneumothorax.
ANS: F DIF: Synthesis REF: Page 835 (Box 27-3)
TOP: Pneumothorax
21. Orthopnea can be relieved by assuming an erect posture.
ANS: T DIF: Memorization... [Show Less]