Question 1

Air flows between alveoli through pores.

Accepted Answer

A) True 
 B)False

Question 2

The difference between intrapleural pressure and intra- alveolar pressure is

Accepted Answer

A)  approximately 100 mm Hg.
B)  transpulmonary pressure.
C)  zero.
D)  the driving force for air flow into and out of the lungs.
E)  atmospheric pressure.

Question 3

The volume of air exchanged with the environment during an unforced breath is called

Accepted Answer

A)  expiratory reserve volume.
B)  vital capacity.
C)  inspiratory capacity.
D)  tidal volume.
E)  inspiratory reserve volume.

Question 4

Which of the following processes is NOT a part of external respiration?

Accepted Answer

A)  the transportation of oxygen and carbon dioxide between the lungs and body tissues by the blood
B)  the exchange of oxygen and carbon dioxide between the lungs and blood by diffusion
C)  the exchange of oxygen and carbon dioxide between the blood and tissues by diffusion
D)  the movement of air into and out of the lungs by bulk flow
E)  the use of oxygen and generation of carbon dioxide by the mitochondria during energy metabolism

Question 5

Mycoplasma tuberculosis, the causative agent in tuberculosis, primarily infects the alveolar macrophages and is therefore very fortunate in its size. Why is this statement true?

Accepted Answer

A)  It is just small enough to land in the mucociliary ladder, where it is moved to the alveoli to infect macrophages.
B)  It is just large enough to land in the respiratory bronchiole, where it migrates to the alveoli.
C)  It is just small enough to land in the bronchi, where it is absorbed by alveolar macrophages.
D)  It is just large enough to land in the mucociliary ladder, where type II macrophages phagocytize them.
E)  It is too small to be caught in the mucociliary ladder and too large to be immediately exhaled, thereby landing it in the alveoli.

Question 6

Which of the following specifically describes the movement of air into and out of the lungs?

Accepted Answer

A)  pulmonary ventilation
B)  respiration
C)  expiration
D)  secondary ventilation
E)  internal respiration

Question 7

Which pressure changes with the phases of respiration but is always negative?

Accepted Answer

A)  rebound pressure (elastic recoil) 
B)  atmospheric pressure
C)  intra- alveolar pressure
D)  transpulmonary pressure
E)  intrapleural pressure

Question 8

How do tractive forces affect the airways during inspiration?

Accepted Answer

A)  decrease in compliance
B)  decrease in airway resistance
C)  increase in compliance
D)  increase in airway resistance
E)  bronchodilation

Question 9

Which of the following varies rhythmically with respiration?

Accepted Answer

A)  atmospheric pressure only
B)  intrapleural pressure only
C)  intra- alveolar pressure only
D)  both intrapleural pressure and intra- alveolar pressure
E)  both atmospheric pressure and intrapleural pressure

Question 10

It is more efficient to increase alveolar ventilation by increasing tidal volume than by increasing respiration rate.

Accepted Answer

A) True 
 B)False

Question 11

What is the volume of air present in the lungs when the lungs are at rest (in between breaths) ?

Accepted Answer

A)  residual volume
B)  functional residual capacity
C)  total lung capacity
D)  zero
E)  tidal volume

Question 12

Which of the following occurs when intra- alveolar pressure exceeds atmospheric pressure?

Accepted Answer

A)  Intrapleural pressure is greater than intra- alveolar pressure.
B)  The lung must be expanding.
C)  Air moves out of the lung.
D)  Air moves into the lung.
E)  The lung collapses.

Question 13

Which cells form the mucus escalator?

Accepted Answer

A)  ciliated cells
B)  type I alveolar cells
C)  alveolar macrophages
D)  type II alveolar cells
E)  goblet cells

Question 14

Which cells engulf foreign particles that reach the lungs?

Accepted Answer

A)  alveolar macrophages
B)  goblet cells
C)  ciliated cells
D)  type II alveolar cells
E)  type I alveolar cells

Question 15

What is the primary determinant of airway resistance?

Accepted Answer

A)  presence of mucous
B)  compliance
C)  traction competency
D)  airway radius
E)  rate of air exchange

Question 16

At rest, expiration is a(n) process that involves .

Accepted Answer

A)  active : relaxation of the diaphragm
B)  active : contraction of the internal intercostals
C)  passive : relaxation of the internal intercostals
D)  active : the contraction of the diaphragm
E)  passive : relaxation of the diaphragm and external intercostals

Question 17

Which of the following is a chronic inflammatory pulmonary disorder characterized by reversible obstruction of the airways?

Accepted Answer

A)  pulmonary fibrosis
B)  asthma
C)  chronic obstructive pulmonary disease (COP
D)  
D)  pulmonary edema
E)  tuberculosis

Question 18

The generation of the pressure responsible for the movement of air follows Boyle's Law. Describe how Boyle's Law relates to pressure development in the lungs, and how that determines inspiration and expiration.

Accepted Answer

Boyle's law states that, for a given qua...

Question 19

The maximum volume of air that can be expired following a maximum inspiration is called

Accepted Answer

A)  tidal volume.
B)  expiratory reserve volume.
C)  inspiratory capacity.
D)  vital capacity.
E)  inspiratory reserve volume.

Question 20

A decrease in _ is indicative of an obstructive pulmonary disease.

Accepted Answer

A)  tidal volume
B)  forced vital capacity
C)  minute ventilation
D)  residual volume
E)  forced expiratory volume

Exam 16: The Respiratory System: Pulmonary Ventilation

Which of the following processes is NOT a part of external respiration?

Correct AnswerverifiedShow Answer

How do tractive forces affect the airways during inspiration?

Correct AnswerverifiedShow Answer

Air flows between alveoli through pores.

Correct AnswerverifiedShow Answer

A decrease in _ is indicative of an obstructive pulmonary disease.

Correct AnswerverifiedShow Answer

Mycoplasma tuberculosis, the causative agent in tuberculosis, primarily infects the alveolar macrophages and is therefore very fortunate in its size. Why is this statement true?

Correct AnswerverifiedShow Answer

Which of the following specifically describes the movement of air into and out of the lungs?

Correct AnswerverifiedShow Answer

Which pressure changes with the phases of respiration but is always negative?

Correct AnswerverifiedShow Answer

The volume of air exchanged with the environment during an unforced breath is called

Correct AnswerverifiedShow Answer

Which of the following varies rhythmically with respiration?

Correct AnswerverifiedShow Answer

What is the volume of air present in the lungs when the lungs are at rest (in between breaths) ?

Correct AnswerverifiedShow Answer

Which of the following is a chronic inflammatory pulmonary disorder characterized by reversible obstruction of the airways?

Correct AnswerverifiedShow Answer

The maximum volume of air that can be expired following a maximum inspiration is called

Correct AnswerverifiedShow Answer

Which of the following occurs when intra- alveolar pressure exceeds atmospheric pressure?

Correct AnswerverifiedShow Answer

It is more efficient to increase alveolar ventilation by increasing tidal volume than by increasing respiration rate.

Correct AnswerverifiedShow Answer

What is the primary determinant of airway resistance?

Correct AnswerverifiedShow Answer

The difference between intrapleural pressure and intra- alveolar pressure is

Correct AnswerverifiedShow Answer

Which cells engulf foreign particles that reach the lungs?

Correct AnswerverifiedShow Answer

The generation of the pressure responsible for the movement of air follows Boyle's Law. Describe how Boyle's Law relates to pressure development in the lungs, and how that determines inspiration and expiration.

Correct AnswerverifiedBoyle's law states that, for a given qua...View AnswerShow Answer

At rest, expiration is a(n) process that involves .

Correct AnswerverifiedShow Answer

Which cells form the mucus escalator?

Correct AnswerverifiedShow Answer

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Boyle's law states that, for a given qua...
View Answer

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