Question 1

The respiratory epithelium of the conducting airways consists of

Accepted Answer

A)  pseudostratified ciliated columnar epithelium. 
B)  moist cuboidal epithelium. 
C)  simple squamous epithelium. 
D)  ciliated squamous epithelium. 
E)  stratified squamous epithelium.

Question 2

While playing in an intramural football game, Joe is tackled so hard that he breaks a rib. He can actuallyfeel a piece of the rib sticking through the skin and he is having a difficult time breathing. Joe is probably suffering from

Accepted Answer

A)  a collapsed trachea. 
B)  an obstruction in the bronchi. 
C)  a pneumothorax. 
D)  decreased surfactant production. 
E)  a bruised diaphragm.

Question 3

The superior region of the pharynx is called the

Accepted Answer

A)  nasal cavity. 
B)  nasopharynx. 
C)  oropharynx. 
D)  laryngopharynx. 
E)  superior nasal conchae.

Question 4

The partial pressure of oxygen in arterial blood is approximately

Accepted Answer

A)  40 mm Hg. 
B)  45 mm Hg. 
C)  50 mm Hg. 
D)  70 mm Hg. 
E)  100 mm Hg.

Question 5

Which of the following organs is not part of the lower respiratory system?

Accepted Answer

A)  pharynx 
B)  trachea 
C)  larynx 
D)  bronchi 
E)  alveoli

Question 6

Figure 23-2 Mechanics of Ventilation
 
Use Figure 23-2 to answer the following questions:
-What is the relationship between the pressures at label "8"?

Accepted Answer

A)  P outside = P inside 
B)  P outside > P inside 
C)  P outside < P inside 
D)  P outside + P inside 
E)  P outside - P inside

Question 7

In-Text Figure Based Questions
-What type of epithelium lines the conducting portion of the respiratory tract? (Figure 23-2)

Accepted Answer

A)  simple squamous epithelium 
B)  simple columnar epithelium 
C)  stratified ciliated columnar epithelium 
D)  pseudostratified ciliated columnar epithelium 
E)  stratified squamous epithelium

Question 8

Air entering the body is filtered, warmed, and humidified by the

Accepted Answer

A)  upper respiratory tract. 
B)  lower respiratory tract. 
C)  lungs. 
D)  alveoli. 
E)  bronchioles.

Question 9

The portion of the nasal cavity contained within the flexible tissues of the external nose is the

Accepted Answer

A)  nasopharynx. 
B)  vestibule. 
C)  internal chamber. 
D)  conchae. 
E)  nasal septum.

Question 10

One way to improve respiratory performance with age is to

Accepted Answer

A)  eat smaller meals. 
B)  stop smoking. 
C)  sleep longer. 
D)  maintain normal glucose levels. 
E)  produce less surfactant.

Question 11

The blood air barrier consists of

Accepted Answer

A)  pseudostratified ciliated columnar epithelium. 
B)  1 layer of moist cuboidal epithelium. 
C)  2 layers of simple squamous epithelium. 
D)  stratified squamous epithelium. 
E)  surfactant cells.

Question 12

The partial pressure of carbon dioxide is greatest in

Accepted Answer

A)  venous blood. 
B)  alveolar air. 
C)  expired air. 
D)  inspired air. 
E)  arterial blood.

Question 13

The entire array of protective mechanisms in the respiratory system is called the

Accepted Answer

A)  respiratory immunity. 
B)  macrophage complex. 
C)  respiratory defense system. 
D)  acquired respiratory defense. 
E)  mucus escalator.

Question 14

________ involves active inspiratory and expiratory movements and calls on accessory muscles to assistwith inhalation, while exhalation involves contraction of the internal intercostal muscles and sometimes abdominal muscles, too.

Accepted Answer

A)  Eupnea 
B)  Forced breathing 
C)  Costal breathing 
D)  Vital breathing 
E)  Passive breathing

Question 15

Physical damage to the lamina propria of the nasal mucosa is likely to result in

Accepted Answer

A)  epistaxis. 
B)  nasal congestion. 
C)  nosebleeds. 
D)  a deviated septum. 
E)  epistaxis or nosebleeds.

Question 16

Which of the following changes does not occur at birth when an infant takes his or her first breaths?

Accepted Answer

A)  Blood flow to the lungs decreases. 
B)  The resistance in the pulmonary arteries decreases. 
C)  Changes in blood flow cause the foramen ovale to close. 
D)  Air enters the alveoli. 
E)  Gas diffuses across the alveolar-capillary membrane.

Question 17

Lungs are held tightly to the wall of the thorax due to

Accepted Answer

A)  the diaphragm and intercostal muscle contractions. 
B)  tight junctions between the lungs and the thorax. 
C)  surface tension of the pleural fluid and negative pressure in the cavity. 
D)  atmospheric pressure pushing on the lungs. 
E)  pulmonary ligaments that anchor the lungs.

Question 18

The term ________ describes the result from an injury that permits air to leak into the intrapleural space.

Accepted Answer

A)  pleurisy 
B)  pneumonia 
C)  pneumothorax 
D)  pulmonary edema 
E)  emphysema

Question 19

Air moves out of the lungs when the pressure inside the lungs is

Accepted Answer

A)  greater than intraalveolar pressure. 
B)  less than the pressure in the atmosphere. 
C)  less than intrapulmonic pressure. 
D)  equal to the pressure in the atmosphere. 
E)  greater than the pressure in the atmosphere.

Question 20

Which of these is not part of the upper respiratory system?

Accepted Answer

A)  larynx 
B)  pharynx 
C)  nasal cavity 
D)  nose 
E)  sinuses

Exam 23: The Respiratory System