Question 1

Dalton's law of gases relates to

Accepted Answer

A) partial pressure of a gas in a mixture of gases. 
B) temperature and pressure of gases. 
C) solubility of gases. 
D) gas pressure and saturation of hemoglobin. 
E) volume and gas pressure. 
A) partial pressure of a gas in a mixture of gases. 
B) temperature and pressure of gases. 
C) solubility of gases. 
D) gas pressure and saturation of hemoglobin. 
E) volume and gas pressure.

Question 2

Each of the following factors affects the rate of external respiration except the

Accepted Answer

A) PO₂ of the alveoli. 
B) PCO₂ of the blood. 
C) thickness of the respiratory membrane. 
D) PN₂ of the alveoli. 
E) solubility of oxygen in plasma. 
A) PO₂ of the alveoli. 
B) PCO₂ of the blood. 
C) thickness of the respiratory membrane. 
D) PN₂ of the alveoli. 
E) solubility of oxygen in plasma.

Question 3

Damage to the type II pneumocytes of the lungs would result in

Accepted Answer

A) a loss of surfactant. 
B) an increased rate of gas exchange. 
C) decreased surface tension in the alveoli. 
D) expansion of alveoli. 
E) All of the answers are correct. 
A) a loss of surfactant. 
B) an increased rate of gas exchange. 
C) decreased surface tension in the alveoli. 
D) expansion of alveoli. 
E) All of the answers are correct.

Question 4

The superior region of the pharynx is called the

Accepted Answer

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

Question 5

Prolonged inspirations can result from stimulating the ________ center.

Accepted Answer

A) apneustic 
B) pneumotaxic 
C) expiratory 
D) baroreceptor 
E) chemoreceptor 
A) apneustic 
B) pneumotaxic 
C) expiratory 
D) baroreceptor 
E) chemoreceptor

Question 6

The number of lobes in the right lung is

Accepted Answer

A) greater than the number of lobes in the left lung. 
B) less than the number of lobes in the left lung. 
C) equal to the number of lobes in the left lung. 
A) greater than the number of lobes in the left lung. 
B) less than the number of lobes in the left lung. 
C) equal to the number of lobes in the left lung.

Question 7

If a patient inhales as deeply as possible and then exhales as much as possible,the volume of air expelled would be the patient's

Accepted Answer

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

Question 8

The function of pulmonary ventilation is to

Accepted Answer

A) remove carbon dioxide from the blood. 
B) supply oxygen to the blood. 
C) maintain adequate alveolar ventilation. 
D) remove air from dead air space. 
E) prevent gas exchange in the bronchioles. 
A) remove carbon dioxide from the blood. 
B) supply oxygen to the blood. 
C) maintain adequate alveolar ventilation. 
D) remove air from dead air space. 
E) prevent gas exchange in the bronchioles.

Question 9

Harry suffers from cystic fibrosis and has severe breathing difficulties.His problems result from

Accepted Answer

A) genetic mutation in cilia production. 
B) laryngospasms. 
C) thick secretions that are difficult to transport. 
D) lack of neural control of respiration. 
E) reduced mucus secretions in the trachea. 
A) genetic mutation in cilia production. 
B) laryngospasms. 
C) thick secretions that are difficult to transport. 
D) lack of neural control of respiration. 
E) reduced mucus secretions in the trachea.

Question 10

Figure 23-2 Mechanics of Ventilation
Use Figure 23-2 to answer the following questions:
-What is the relationship between the pressures at label "3"?

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 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 11

Figure 23-2 Mechanics of Ventilation
Use Figure 23-2 to answer the following questions:
-How does the pressure "P4" at label "4" compare to the pressure "P5" at label "5"?

Accepted Answer

A) P4 is higher than P5 during inhalation and then lower during exhalation. 
B) P4 is always higher than P5. 
C) P4 is always lower than P5. 
D) P4 always equals P5. 
E) P4 is lower than P5 during inhalation and then higher during exhalation. 
A) P4 is higher than P5 during inhalation and then lower during exhalation. 
B) P4 is always higher than P5. 
C) P4 is always lower than P5. 
D) P4 always equals P5. 
E) P4 is lower than P5 during inhalation and then higher during exhalation.

Question 12

Figure 23-2 Mechanics of Ventilation
Use Figure 23-2 to answer the following questions:
-Which muscle(s)contract(s)to cause the movement indicated by the arrows labeled "6" and "7"?

Accepted Answer

A) rectus abdominis 
B) internal intercostals 
C) external intercostals 
D) diaphragm 
E) both rectus abdominis and internal intercostals 
A) rectus abdominis 
B) internal intercostals 
C) external intercostals 
D) diaphragm 
E) both rectus abdominis and internal intercostals

Question 13

Respiratory function deteriorates as a result of pneumonia because inflammation

Accepted Answer

A) causes fluids to leak into the alveoli. 
B) causes respiratory bronchioles to swell and dilate. 
C) causes the lungs to leak air into the thorax. 
D) reduces movement of the epiglottis. 
E) reduces the size of the pleural cavity. 
A) causes fluids to leak into the alveoli. 
B) causes respiratory bronchioles to swell and dilate. 
C) causes the lungs to leak air into the thorax. 
D) reduces movement of the epiglottis. 
E) reduces the size of the pleural cavity.

Question 14

The pneumotaxic center of the pons

Accepted Answer

A) sets the at-rest respiratory pattern. 
B) prolongs inspiration. 
C) modifies the rate and depth of breathing. 
D) suppresses the expiratory center in the medulla. 
E) stimulates the dorsal respiratory group. 
A) sets the at-rest respiratory pattern. 
B) prolongs inspiration. 
C) modifies the rate and depth of breathing. 
D) suppresses the expiratory center in the medulla. 
E) stimulates the dorsal respiratory group.

Question 15

An acute infection of the throat that can lead to swelling and closure of the glottis and cause suffocation is known as

Accepted Answer

A) laryngitis. 
B) laryngospasm. 
C) acute epiglottitis. 
D) strep throat. 
E) acute pharyngitis. 
A) laryngitis. 
B) laryngospasm. 
C) acute epiglottitis. 
D) strep throat. 
E) acute pharyngitis.

Question 16

Low pH alters hemoglobin structure so that oxygen binds less strongly to hemoglobin at low PO₂.This increases the effectiveness of

Accepted Answer

A) external respiration. 
B) internal respiration. 
C) carbon dioxide transport. 
D) hemoglobin synthesis. 
E) acid-base balance. 
A) external respiration. 
B) internal respiration. 
C) carbon dioxide transport. 
D) hemoglobin synthesis. 
E) acid-base balance.

Question 17

Which of the following is not a function of the nasal mucosa?

Accepted Answer

A) warming the incoming air 
B) trapping particulate matter 
C) dehumidifying the incoming air 
D) cooling outgoing air 
E) None of the answers is correct; all of these are functions of the nasal mucosa. 
A) warming the incoming air 
B) trapping particulate matter 
C) dehumidifying the incoming air 
D) cooling outgoing air 
E) None of the answers is correct; all of these are functions of the nasal mucosa.

Question 18

Breathing that involves active inspiratory and expiratory movements is called

Accepted Answer

A) eupnea. 
B) hyperpnea. 
C) diaphragmatic breathing. 
D) costal breathing. 
E) shallow breathing. 
A) eupnea. 
B) hyperpnea. 
C) diaphragmatic breathing. 
D) costal breathing. 
E) shallow breathing.

Question 19

The actual sites of gas exchange within the lungs are the

Accepted Answer

A) bronchioles. 
B) terminal bronchioles. 
C) spaces between the parietal and visceral pleura. 
D) respiratory membranes of the alveoli. 
E) interlobular septa. 
A) bronchioles. 
B) terminal bronchioles. 
C) spaces between the parietal and visceral pleura. 
D) respiratory membranes of the alveoli. 
E) interlobular septa.

Question 20

The movement of chloride ions into the RBCs in exchange for bicarbonate ions is known as the chloride

Accepted Answer

A) trade. 
B) shift. 
C) exchange. 
D) swap. 
E) transport. 
A) trade. 
B) shift. 
C) exchange. 
D) swap. 
E) transport.

Exam 23: The Respiratory System

Dalton's law of gases relates to

Each of the following factors affects the rate of external respiration except the

Damage to the type II pneumocytes of the lungs would result in

The superior region of the pharynx is called the

Prolonged inspirations can result from stimulating the ________ center.

The number of lobes in the right lung is

If a patient inhales as deeply as possible and then exhales as much as possible,the volume of air expelled would be the patient's

The function of pulmonary ventilation is to

Harry suffers from cystic fibrosis and has severe breathing difficulties.His problems result from

Figure 23-2 Mechanics of Ventilation Use Figure 23-2 to answer the following questions: -What is the relationship between the pressures at label "3"?

Figure 23-2 Mechanics of Ventilation Use Figure 23-2 to answer the following questions: -How does the pressure "P4" at label "4" compare to the pressure "P5" at label "5"?

Figure 23-2 Mechanics of Ventilation Use Figure 23-2 to answer the following questions: -Which muscle(s)contract(s)to cause the movement indicated by the arrows labeled "6" and "7"?

Respiratory function deteriorates as a result of pneumonia because inflammation

The pneumotaxic center of the pons

An acute infection of the throat that can lead to swelling and closure of the glottis and cause suffocation is known as

Low pH alters hemoglobin structure so that oxygen binds less strongly to hemoglobin at low PO₂.This increases the effectiveness of

Which of the following is not a function of the nasal mucosa?

Breathing that involves active inspiratory and expiratory movements is called

The actual sites of gas exchange within the lungs are the

The movement of chloride ions into the RBCs in exchange for bicarbonate ions is known as the chloride

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

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