Chapter 27: Physiology of the Respiratory System

Chapter 27: Physiology of the Respiratory System

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

Chapter 27-A: Physiology of the Respiratory System

 

Test Bank

 

TRUE/FALSE

 

1. The major factor that 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.

 

ANS:   T                      DIF:    Memorization                                     REF:    Page 834

TOP:    Pulmonary Capacities

 

Chapter 27-B: Physiology of the Respiratory System

 

Test Bank

 

MULTIPLE CHOICE

 

1. Which of the following is not a regulated process associated with the functioning of the respiratory system?

a.	Transport of gases
b.	Gas exchange in lungs and tissue
c.	Control of cell metabolism rate
d.	Pulmonary ventilation

 

ANS:   C                     DIF:    Memorization                                     REF:    Page 824

TOP:    Respiratory Physiology

 

2. Standard atmospheric pressure is _____ mm Hg.

a.	650
b.	700
c.	760
d.	800

 

ANS:   C                     DIF:    Memorization                                     REF:    Page 824

TOP:    Mechanisms of Pulmonary Ventilation

 

3. Boyle law states that the volume of a gas varies _____ with pressure at a _____ temperature.

a.	directly; constant
b.	inversely; constant
c.	directly; constantly changing
d.	inversely; constantly changing

 

ANS:   B                     DIF:    Memorization                                     REF:    Page 826

TOP:    Mechanisms of Pulmonary Ventilation

 

4. Which muscles are used for forced expiration?

a.	Sternocleidomastoid and abdominal muscles
b.	Sternocleidomastoid and intercostals
c.	External intercostals and pectoralis muscles
d.	Abdominal muscles and internal intercostals

 

ANS:   D                     DIF:    Memorization                                     REF:    Page 831

TOP:    Mechanisms of Pulmonary Ventilation

 

5. When the pressure in the lung is greater than atmospheric pressure:

a.	inspiration occurs.
b.	expiration occurs.
c.	lung tissue has collapsed.
d.	the bronchioles are obstructed.

 

ANS:   B                     DIF:    Application     REF:    Page 824

TOP:    Mechanisms of Pulmonary Ventilation

 

6. The vital capacity is equal to the sum of the:

a.	inspiratory capacity and the residual volume.
b.	inspiratory reserve volume, tidal volume, and expiratory reserve volume.
c.	tidal volume, residual volume, and expiratory reserve volume.
d.	inspiratory reserve volume, tidal volume, and inspiratory capacity.

 

ANS:   B                     DIF:    Memorization                                     REF:    Page 834

TOP:    Pulmonary Capacities