Egan's Chapter 9 - The Respiratory System Questions with Verified Answers
1. a. Continuous ab- What is the primary purpose of the respiratory system?
sorption of oxy- a. Continuous absorption of oxygen (O2) and excretion of
gen (O2) and ex- carbon dioxide
cretion of carbon b. Filtering to prevent allergens and microbes from reach-
dioxide ing the lungs
c. Transport oxygenated blood to the tissues
d. Warm and humidify inspired gas
2. d. Exchange of What is meant by "internal respiration"?
gases between a. Any gas exchange that occurs inside the body
the blood and the b. Consumption of O2
tissue in the mitochondria
c. Continuous absorption of O2
and excretion of carbon dioxide
d. Exchange of gases between the blood and the tissue
3. d. Simple diffu- By what mechanism does gas exchange across the lung
sion occur?
a. Active transport
b. Facilitated diffusion
c. Facilitated transport
d. Simple diffusion
4. a. It receives What is unique regarding the blood supply to the lung?
blood from right a. It receives blood from right and left ventricles.
and left ventri- b. It requires no dedicated blood supply as it exists in a gas
cles. environment.
c. Pulmonary venous drainage contributes to the normal
anatomic shunt.
d. The pulmonary arteries are the primary source of O2 for
lung structures.
5. c. Protect the vi- What is the function of the thorax?
tal organs. a. Facilitate digestion.
b. Heat, humidify, and filter gases.
c. Protect the vital organs.
d. Vocalization.
6. c. Parietal pleura
,Egan's Chapter 9 - The Respiratory System Questions with Verified Answers
What is the name of the thin serous membrane that covers
the inner layer of the
thoracic wall?
a. Cupula
b. Mesothelioma
c. Parietal pleura
d. Visceral pleura
7. b. Manubrium What is the name of the upper portion of the sternum?
a. Angle of Louis
b. Manubrium
c. Vertebral process
d. Xiphoid process
8. b. At the Where does the sternal angle lie?
join between the a. At the depression in the body of the sternum to which
manubrium and the clavicles attach
sternal body b. At the join between the manubrium and sternal body
c. At the superior edge of the sternum
d. Where the xiphoid process connects to the sternum
9. a. Sternal angle What is the name of the external landmark that identifies
the point at which the trachea
branches into the right and left main stem bronchi?
a. Sternal angle
b. Cricoid cartilage
c. Suprasternal notch
d. Xiphoid process
10. b. 1 through 7 Which of rib pairs connect directly to the sternum?
a. 1 through 4
b.1 through 7
c.1 through 12
d. 11 through 12
11. c. Floating ribs What are rib pairs 11 and 12 known as?
a. False ribs
b. Faux ribs
c. Floating ribs
d. True ribs
, Egan's Chapter 9 - The Respiratory System Questions with Verified Answers
12. b. Costal groove The intercostal arteries, veins, and nerves run through
on the bottom of which of the following?
each rib a. Costal groove on the top of each rib
b. Costal groove on the bottom of each rib
c. Fibers of the intercostal musculature
d. Surface of the parietal pleura
13. b. 1 and 2 Which of the following muscles are considered primary
muscles of ventilation?
1. Diaphragm
2. Intercostals
3. Scalenes
4. Sternomastoid
a. 1, 3, and 4
b. 1 and 2
c. 3 only
d. 1, 2, 3, and 4
14. d. 75 Approximately what percent of the normal changes in
thoracic volume during quiet
inspiration is due to the action of the diaphragm?
a. 15
b. 25
c. 50
d. 75
15. a. 1 to 2 cm How far is the diaphragm pulled down during tidal breath-
ing?
a.1 to 2 cm
b. 3 to 5 cm
c. 6 to 8 cm
d. 8 to 10 cm
16. a. Compression Compared to a normal diaphragm, contraction of a di-
of the thoracic aphragm that is low and flat may
cavity result in which of the following?
a. Compression of the thoracic cavity
b. Enhanced venous return and thus cardiac output
1. a. Continuous ab- What is the primary purpose of the respiratory system?
sorption of oxy- a. Continuous absorption of oxygen (O2) and excretion of
gen (O2) and ex- carbon dioxide
cretion of carbon b. Filtering to prevent allergens and microbes from reach-
dioxide ing the lungs
c. Transport oxygenated blood to the tissues
d. Warm and humidify inspired gas
2. d. Exchange of What is meant by "internal respiration"?
gases between a. Any gas exchange that occurs inside the body
the blood and the b. Consumption of O2
tissue in the mitochondria
c. Continuous absorption of O2
and excretion of carbon dioxide
d. Exchange of gases between the blood and the tissue
3. d. Simple diffu- By what mechanism does gas exchange across the lung
sion occur?
a. Active transport
b. Facilitated diffusion
c. Facilitated transport
d. Simple diffusion
4. a. It receives What is unique regarding the blood supply to the lung?
blood from right a. It receives blood from right and left ventricles.
and left ventri- b. It requires no dedicated blood supply as it exists in a gas
cles. environment.
c. Pulmonary venous drainage contributes to the normal
anatomic shunt.
d. The pulmonary arteries are the primary source of O2 for
lung structures.
5. c. Protect the vi- What is the function of the thorax?
tal organs. a. Facilitate digestion.
b. Heat, humidify, and filter gases.
c. Protect the vital organs.
d. Vocalization.
6. c. Parietal pleura
,Egan's Chapter 9 - The Respiratory System Questions with Verified Answers
What is the name of the thin serous membrane that covers
the inner layer of the
thoracic wall?
a. Cupula
b. Mesothelioma
c. Parietal pleura
d. Visceral pleura
7. b. Manubrium What is the name of the upper portion of the sternum?
a. Angle of Louis
b. Manubrium
c. Vertebral process
d. Xiphoid process
8. b. At the Where does the sternal angle lie?
join between the a. At the depression in the body of the sternum to which
manubrium and the clavicles attach
sternal body b. At the join between the manubrium and sternal body
c. At the superior edge of the sternum
d. Where the xiphoid process connects to the sternum
9. a. Sternal angle What is the name of the external landmark that identifies
the point at which the trachea
branches into the right and left main stem bronchi?
a. Sternal angle
b. Cricoid cartilage
c. Suprasternal notch
d. Xiphoid process
10. b. 1 through 7 Which of rib pairs connect directly to the sternum?
a. 1 through 4
b.1 through 7
c.1 through 12
d. 11 through 12
11. c. Floating ribs What are rib pairs 11 and 12 known as?
a. False ribs
b. Faux ribs
c. Floating ribs
d. True ribs
, Egan's Chapter 9 - The Respiratory System Questions with Verified Answers
12. b. Costal groove The intercostal arteries, veins, and nerves run through
on the bottom of which of the following?
each rib a. Costal groove on the top of each rib
b. Costal groove on the bottom of each rib
c. Fibers of the intercostal musculature
d. Surface of the parietal pleura
13. b. 1 and 2 Which of the following muscles are considered primary
muscles of ventilation?
1. Diaphragm
2. Intercostals
3. Scalenes
4. Sternomastoid
a. 1, 3, and 4
b. 1 and 2
c. 3 only
d. 1, 2, 3, and 4
14. d. 75 Approximately what percent of the normal changes in
thoracic volume during quiet
inspiration is due to the action of the diaphragm?
a. 15
b. 25
c. 50
d. 75
15. a. 1 to 2 cm How far is the diaphragm pulled down during tidal breath-
ing?
a.1 to 2 cm
b. 3 to 5 cm
c. 6 to 8 cm
d. 8 to 10 cm
16. a. Compression Compared to a normal diaphragm, contraction of a di-
of the thoracic aphragm that is low and flat may
cavity result in which of the following?
a. Compression of the thoracic cavity
b. Enhanced venous return and thus cardiac output
