Question 1

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

Question 2

Dalton's law states that

Accepted Answer

A) gas volume and temperature are directly proportional. 
B) gas volume and pressure are inversely proportional. 
C) the volume of gas that will dissolve in a solvent is proportional to the solubility of the gas and the gas pressure. 
D) in a mixture of gases such as air,the total pressure is the sum of the individual partial pressures of the gases in the mixture. 
E) gas pressure is inversely proportional to gas volume. 
A) gas volume and temperature are directly proportional. 
B) gas volume and pressure are inversely proportional. 
C) the volume of gas that will dissolve in a solvent is proportional to the solubility of the gas and the gas pressure. 
D) in a mixture of gases such as air,the total pressure is the sum of the individual partial pressures of the gases in the mixture. 
E) gas pressure is inversely proportional to gas volume.

Question 3

Blocking afferent action potentials from the chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing in response to

Accepted Answer

A) changes in PCO₂. 
B) changes in PO₂. 
C) changes in pH. 
D) changes in blood pressure. 
E) changes in PCO₂,PO₂,ₐnd pH. 
A) changes in PCO₂. 
B) changes in PO₂. 
C) changes in pH. 
D) changes in blood pressure. 
E) changes in PCO₂,PO₂,ₐnd pH.

Question 4

Primary bronchi are to ________ as secondary bronchi are to ________.

Accepted Answer

A) extrapulmonary bronchi; intrapulmonary bronchi 
B) lobar bronchi; intrapulmonary bronchi 
C) intrapulmonary bronchi; lobar bronchi 
D) trachea; pharynx 
E) secondary bronchi; alveolar ducts 
A) extrapulmonary bronchi; intrapulmonary bronchi 
B) lobar bronchi; intrapulmonary bronchi 
C) intrapulmonary bronchi; lobar bronchi 
D) trachea; pharynx 
E) secondary bronchi; alveolar ducts

Question 5

Which of the following statements about the chloride shift is false?

Accepted Answer

A) It involves a movement of chloride ion into RBCs. 
B) It depends on the chloride-bicarbonate countertransporter. 
C) It involves a movement of bicarbonate ions into the plasma. 
D) It is driven by a rise in PCO₂. 
E) It causes RBCs to swell. 
A) It involves a movement of chloride ion into RBCs. 
B) It depends on the chloride-bicarbonate countertransporter. 
C) It involves a movement of bicarbonate ions into the plasma. 
D) It is driven by a rise in PCO₂. 
E) It causes RBCs to swell.

Question 6

The apneustic centers of the pons

Accepted Answer

A) inhibit the pneumotaxic and inspiratory centers. 
B) provide stimulation to the inspiratory center. 
C) monitor blood gas levels. 
D) alter chemoreceptor sensitivity. 
E) generate the gasp reflex. 
A) inhibit the pneumotaxic and inspiratory centers. 
B) provide stimulation to the inspiratory center. 
C) monitor blood gas levels. 
D) alter chemoreceptor sensitivity. 
E) generate the gasp reflex.

Question 7

Carbonic anhydrase

Accepted Answer

A) is in RBCs. 
B) is an enzyme. 
C) can increase the amount of bicarbonate ion in plasma. 
D) can decrease the amount of bicarbonate ion in plasma. 
E) All of the answers are correct. 
A) is in RBCs. 
B) is an enzyme. 
C) can increase the amount of bicarbonate ion in plasma. 
D) can decrease the amount of bicarbonate ion in plasma. 
E) All of the answers are correct.

Question 8

Stimulation of the apneustic center would result in

Accepted Answer

A) increased respiratory rate. 
B) more intense inhalation. 
C) a shorter respiratory cycle. 
D) less activity in the DRG center. 
E) decreased vital capacity. 
A) increased respiratory rate. 
B) more intense inhalation. 
C) a shorter respiratory cycle. 
D) less activity in the DRG center. 
E) decreased vital capacity.

Question 9

Roughly ________ terminal bronchioles arise from each tertiary bronchus.

Accepted Answer

A) 1,500 
B) 3,000 
C) 6,500 
D) 10,000 
E) 100,000 
A) 1,500 
B) 3,000 
C) 6,500 
D) 10,000 
E) 100,000

Question 10

Asthma is

Accepted Answer

A) a collapsed lung resulting from insufficient production of surfactant. 
B) due to an excessive stimulation of smooth muscle in bronchioles. 
C) an obstructive tumor targeting primarily the terminal bronchioles. 
D) characterized by fluid buildup in the alveoli. 
E) caused by Mycobacterium tuberculosis. 
A) a collapsed lung resulting from insufficient production of surfactant. 
B) due to an excessive stimulation of smooth muscle in bronchioles. 
C) an obstructive tumor targeting primarily the terminal bronchioles. 
D) characterized by fluid buildup in the alveoli. 
E) caused by Mycobacterium tuberculosis.

Question 11

Ventilation performed by contraction of the external intercostals muscle is known as ________ breathing.

Accepted Answer

A) forced 
B) deep 
C) costal 
D) labored 
E) passive 
A) forced 
B) deep 
C) costal 
D) labored 
E) passive

Question 12

Figure 23-1 The Upper Airways
Use Figure 23-1 to answer the following questions:
-Identify the structure labeled "7."

Accepted Answer

A) internal nares 
B) esophagus 
C) glottis 
D) oropharynx 
E) laryngopharynx 
A) internal nares 
B) esophagus 
C) glottis 
D) oropharynx 
E) laryngopharynx

Question 13

The unit of measurement for pressure preferred by many respiratory therapists is

Accepted Answer

A) mm Hg. 
B) torr. 
C) cm H₂O. 
D) psi. 
E) centigrade. 
A) mm Hg. 
B) torr. 
C) cm H₂O. 
D) psi. 
E) centigrade.

Question 14

Damage to the phrenic nerves would

Accepted Answer

A) increase respiratory rate. 
B) increase the tidal volume. 
C) force reliance on costal breathing. 
D) result in greater pressure differences between the lungs and the outside air. 
E) have little effect on ventilation. 
A) increase respiratory rate. 
B) increase the tidal volume. 
C) force reliance on costal breathing. 
D) result in greater pressure differences between the lungs and the outside air. 
E) have little effect on ventilation.

Question 15

Which of the following descriptions best matches the term external intercostal?

Accepted Answer

A) accessory muscle of expiration 
B) accessory muscle of inspiration 
C) primary muscle of inspiration 
D) primary muscle of expiration 
E) an accessory muscle for both expiration and inspiration 
A) accessory muscle of expiration 
B) accessory muscle of inspiration 
C) primary muscle of inspiration 
D) primary muscle of expiration 
E) an accessory muscle for both expiration and inspiration

Question 16

Figure 23-1 The Upper Airways
Use Figure 23-1 to answer the following questions:
-Which structure vibrates to produce sound?

Accepted Answer

A) 5 
B) 8 
C) 10 
D) 11 
E) 19 
A) 5 
B) 8 
C) 10 
D) 11 
E) 19

Question 17

________ involves active inspiratory and expiratory movements and calls on accessory muscles to assist with 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 
A) Eupnea 
B) Forced breathing 
C) Costal breathing 
D) Vital breathing 
E) Passive breathing

Question 18

The airway that connects the larynx to the bronchial tree is the

Accepted Answer

A) trachea. 
B) bronchiole. 
C) laryngopharynx. 
D) alveolar duct. 
E) bronchus. 
A) trachea. 
B) bronchiole. 
C) laryngopharynx. 
D) alveolar duct. 
E) bronchus.

Question 19

In emphysema,which of the following occur(s)?

Accepted Answer

A) damage to alveolar surfaces 
B) compliance increases 
C) elevated PCO₂ in the blood 
D) depressed PO₂ in the blood 
E) All of the answers are correct. 
A) damage to alveolar surfaces 
B) compliance increases 
C) elevated PCO₂ in the blood 
D) depressed PO₂ in the blood 
E) All of the answers are correct.

Question 20

Figure 23-1 The Upper Airways
Use Figure 23-1 to answer the following questions:
-What is the function of the structures labeled "12"?

Accepted Answer

A) cause air to swirl within the respiratory passageway 
B) improve warming of incoming air 
C) create narrow passages 
D) help olfaction 
E) All of the answers are correct. 
A) cause air to swirl within the respiratory passageway 
B) improve warming of incoming air 
C) create narrow passages 
D) help olfaction 
E) All of the answers are correct.

Exam 23: The Respiratory System

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

Dalton's law states that

Blocking afferent action potentials from the chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing in response to

Primary bronchi are to ________ as secondary bronchi are to ________.

Which of the following statements about the chloride shift is false?

The apneustic centers of the pons

Carbonic anhydrase

Stimulation of the apneustic center would result in

Roughly ________ terminal bronchioles arise from each tertiary bronchus.

Asthma is

Ventilation performed by contraction of the external intercostals muscle is known as ________ breathing.

Figure 23-1 The Upper Airways Use Figure 23-1 to answer the following questions: -Identify the structure labeled "7."

The unit of measurement for pressure preferred by many respiratory therapists is

Damage to the phrenic nerves would

Which of the following descriptions best matches the term external intercostal?

Figure 23-1 The Upper Airways Use Figure 23-1 to answer the following questions: -Which structure vibrates to produce sound?

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

The airway that connects the larynx to the bronchial tree is the

In emphysema,which of the following occur(s)?

Figure 23-1 The Upper Airways Use Figure 23-1 to answer the following questions: -What is the function of the structures labeled "12"?

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters

Primary bronchi are to as secondary bronchi are to .