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Test Bank For Mosbys Respiratory Care Anatomy and Physiology 3rd Edition Foundations for Clinical Practice Will Beachey All Chapters Covered.$23.99
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Test Bank For Mosbys Respiratory Care Anatomy and Physiology 3rd Edition Foundations for Clinical Practice Will Beachey All Chapters Covered.
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Course
Nursing
Institution
Nursing
This comprehensive test bank provides extensive assessment material covering all chapters of the 3rd edition textbook on respiratory care anatomy and physiology by Will Beachey. Designed to accompany the "Mosby's Respiratory Care: Foundations for Clinical Practice" core text, the test bank offers a...
TEST BANK
Respiratory Care Anatomy and Physiology Foundations for Clinical Practice 3rd Edition
Will Beachey
Chapter 4: Ventilation
Test Bank
MULTIPLE CHOICE
1. What is the partial pressure of oxygen in atmospheric air?
a.
0.228 mm Hg
b.
159 mm Hg
c.
47 mm Hg
d.
149 mm Hg
ANS: B
Because oxygen constitutes 20.93% of dry atmospheric air, its partial pressure (PO2) at sea
level is as follows: PO2 = 0.2093 760 mm Hg = 159 mm Hg
DIF: Recall REF: 84
2. What is the partial pressure of carbon dioxide in atmospheric air?
a.
0.228 mm Hg
b.
159 mm Hg
c.
47 mm Hg
d.
149 mm Hg
ANS: A
The partial pressure of carbon dioxide (PCO2) is calculated as follows:PCO2 = 0.0003 760
mm Hg = 0.228 mm Hg
DIF: Recall REF: 84
3. What is the partial pressure of water vapor at 37C and 100% relative humidity (RH)?
a.
0.228 mm Hg
b.
159 mm Hg
c.
47 mm Hg
d.
149 mm Hg
ANS: C
Because the body maintains lung temperature and RH at 37C and 100%, respectively, the
PH2O of gas in the lung is constant; under these temperature and humidity conditions PH2O is
always 47 mm Hg.
DIF: Recall REF: 84
4. What is the partial pressure of oxygen in the lung’s airways?
a.
0.228 mm Hg
b.
159 mm Hg
, c.
47 mm Hg
d.
149 mm Hg
ANS: D
To calculate Pgas in the lung or blood, 47 mm Hg must first be subtracted from PB. In the
lung’s airways, PO2 is calculated as follows: PO2 = 0.2093 (760 47) mm Hg = 149 mm Hg
DIF: Recall REF: 84
5. VE is the product of which of the following parameters?
a.
VT and VC
b.
VD and f
c.
VT and f
d.
VD and VT
ANS: C
Regardless of the measuring method, VE is the product of VT and breathing frequency (f) per
minute (VE = VT f). For example, if VT is 500 mL and breathing frequency is 12 breaths per
minute, VE is calculated as follows: VE = 500 mL 12/minVE = 6000 mL/min or 6.0 L/minVE
is easy to measure but is not extremely useful in evaluating the amount of ventilation that
participates in respiration at the alveolar level.
DIF: Recall REF: 85
6. Which of the following terms defines the conducting airways from the mouth and nose down
to and including terminal bronchioles?
a.
Physiological dead space
b.
Anatomical dead space
c.
Anatomical tidal volume
d.
Gas exchange units
ANS: B
The conducting airways from the mouth and nose down to and including terminal bronchioles
constitute the anatomical dead space (VDanat).
DIF: Recall REF: 85
7. Which of the following are characteristics of the anatomical dead space?
I. It changes when a part of a lung is surgically removed.
II. It increases when an artificial airway bypasses the upper airway.
III. It increases during deep inspiration.
IV. It increases with emphysema.
a.
I, IV
b.
II, III, IV
c.
I, II, III, IV
d.
II, IV
ANS: C
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