Question 1

During inspiration, why does air move into the lungs?

Accepted Answer

A)  The pressure inside the lungs has decreased below atmospheric pressure. 
B)  The pressure inside the lungs has increased above atmospheric pressure. 
C)  The increased pressure in the lungs has opened up collapsed airways, so air can flow in. 
D)  The space (volume) within the lungs has decreased, allowing air flow into the lungs. 
A)  The pressure inside the lungs has decreased below atmospheric pressure. 
B)  The pressure inside the lungs has increased above atmospheric pressure. 
C)  The increased pressure in the lungs has opened up collapsed airways, so air can flow in. 
D)  The space (volume) within the lungs has decreased, allowing air flow into the lungs. A

Question 2

The respiratory centers are located in the medulla oblongata and the __________ of the brainstem.

Accepted Answer

pons

Question 3

The receptors for the inflation reflex are most sensitive to what type of stimulus?

Accepted Answer

A)  Touch 
B)  Stretch 
C)  pH changes 
D)  Oxygen levels (P O2) in alveoli 
A)  Touch 
B)  Stretch 
C)  pH changes 
D)  Oxygen levels (P O2) in alveoli B

Question 4

The chemical reaction between __________ is catalyzed by the enzyme carbonic anhydrase.

Accepted Answer

A)  carbon dioxide and water 
B)  carbon dioxide and bicarbonate ion 
C)  water and bicarbonate ion 
D)  carbon dioxide and hydrogen ion 
A)  carbon dioxide and water 
B)  carbon dioxide and bicarbonate ion 
C)  water and bicarbonate ion 
D)  carbon dioxide and hydrogen ion

Question 5

What results from the breathing pattern called hyperventilation?

Accepted Answer

A)  Decrease in plasma P CO2 
B)  Increase in plasma P CO2 
C)  Decrease in plasma P O2 
D)  Decrease in blood pH 
A)  Decrease in plasma P CO2 
B)  Increase in plasma P CO2 
C)  Decrease in plasma P O2 
D)  Decrease in blood pH

Question 6

The most common form of lung cancer originates from what cell type?

Accepted Answer

A)  Epithelial cells 
B)  Smooth muscle cells 
C)  Loose connective tissue cells 
D)  Hyaline cartilage cells 
A)  Epithelial cells 
B)  Smooth muscle cells 
C)  Loose connective tissue cells 
D)  Hyaline cartilage cells

Question 7

The P CO2 of blood in systemic capillaries is __________ than the P CO2 of the blood in pulmonary capillaries.

Accepted Answer

A)  higher 
B)  lower 
A)  higher 
B)  lower

Question 8

Without surfactant, the surface tension within the alveoli of the lungs would cause __________.

Accepted Answer

A)  collapse of alveoli 
B)  a drop in pressure within alveoli 
C)  over-inflation of alveoli 
D)  leakiness of the respiratory membrane 
A)  collapse of alveoli 
B)  a drop in pressure within alveoli 
C)  over-inflation of alveoli 
D)  leakiness of the respiratory membrane

Question 9

What type of tissue forms the lining of the nasal cavities?

Accepted Answer

A)  Pseudostratified ciliated columnar epithelium 
B)  Simple squamous epithelium 
C)  Stratified squamous epithelium 
D)  Loose connective tissue 
A)  Pseudostratified ciliated columnar epithelium 
B)  Simple squamous epithelium 
C)  Stratified squamous epithelium 
D)  Loose connective tissue

Question 10

How is oxygen transported in the blood?

Accepted Answer

A)  1-2% dissolved in plasma; 98-99% as oxyhemoglobin 
B)  10-20% dissolved in plasma; 80-90% as oxyhemoglobin 
C)  50% dissolved in plasma; 50% as oxyhemoglobin 
D)  98-99% dissolved in plasma; 1-2% as oxyhemoglobin 
A)  1-2% dissolved in plasma; 98-99% as oxyhemoglobin 
B)  10-20% dissolved in plasma; 80-90% as oxyhemoglobin 
C)  50% dissolved in plasma; 50% as oxyhemoglobin 
D)  98-99% dissolved in plasma; 1-2% as oxyhemoglobin

Question 11

Why is laryngitis a potentially dangerous condition?

Accepted Answer

A)  It can lead to obstruction of the esophagus. 
B)  It can cause obstruction of the airway. 
C)  It could spread, causing an inner ear infection. 
D)  It could cause difficulty swallowing. 
A)  It can lead to obstruction of the esophagus. 
B)  It can cause obstruction of the airway. 
C)  It could spread, causing an inner ear infection. 
D)  It could cause difficulty swallowing.

Question 12

At the end of a quiet expiration, an additional volume of air can be expelled from the lungs. What is this additional amount of air called?

Accepted Answer

A)  Expiratory reserve volume 
B)  Residual volume 
C)  Inspiratory reserve volume 
D)  Vital capacity 
E)  Tidal volume 
A)  Expiratory reserve volume 
B)  Residual volume 
C)  Inspiratory reserve volume 
D)  Vital capacity 
E)  Tidal volume

Question 13

During __________, air movement is due to increased air pressure in the lungs.

Accepted Answer

A)  expiration 
B)  inspiration 
A)  expiration 
B)  inspiration

Question 14

An increase in blood P CO2 results in a(n) __________ in pH.

Accepted Answer

A)  increase 
B)  decrease 
A)  increase 
B)  decrease

Question 15

What structures form a respiratory membrane?

Accepted Answer

A)  An alveolar wall, a bronchiolar wall, and their basement membranes 
B)  The vocal folds and the glottis between them 
C)  A capillary wall, an alveolar wall, and their basement membranes 
D)  The parietal pleura, the visceral pleura, and the serous fluid between them 
A)  An alveolar wall, a bronchiolar wall, and their basement membranes 
B)  The vocal folds and the glottis between them 
C)  A capillary wall, an alveolar wall, and their basement membranes 
D)  The parietal pleura, the visceral pleura, and the serous fluid between them

Question 16

What forms the respiratory membrane?

Accepted Answer

A)  A single layer of epithelial cells but not its basement membrane 
B)  A single layer of epithelial cells and its basement membrane 
C)  Two layers of epithelial cells but not their basement membranes 
D)  Two layers of epithelial cells and their basement membranes 
A)  A single layer of epithelial cells but not its basement membrane 
B)  A single layer of epithelial cells and its basement membrane 
C)  Two layers of epithelial cells but not their basement membranes 
D)  Two layers of epithelial cells and their basement membranes

Question 17

A breathing pattern that eliminates too much CO 2 is called hyperventilation.

Accepted Answer

A) True 
 B)False

Question 18

How is carbaminohemoglobin formed?

Accepted Answer

A)  Carbon dioxide binds to hemoglobin. 
B)  Carbon atoms bind to hemoglobin. 
C)  Carbonic anhydrase binds to hemoglobin. 
D)  Carbohydrates bind to hemoglobin. 
A)  Carbon dioxide binds to hemoglobin. 
B)  Carbon atoms bind to hemoglobin. 
C)  Carbonic anhydrase binds to hemoglobin. 
D)  Carbohydrates bind to hemoglobin.

Question 19

The __________ respiratory group is responsible for the basic rhythm of breathing, stimulating the inspiratory muscles.

Accepted Answer

A)  ventral 
B)  dorsal 
C)  pontine 
A)  ventral 
B)  dorsal 
C)  pontine

Question 20

What is the pathway for airflow from the nasal cavity to the location of gas exchange within the lungs?

Accepted Answer

A)  Nasal cavity → pharynx → larynx → bronchial tree → alveoli 
B)  Nasal cavity → larynx → pharynx → bronchial tree → alveoli 
C)  Nasal cavity → bronchial tree → pharynx → larynx → alveoli 
D)  Nasal cavity → larynx → bronchial tree→ pharynx → alveoli 
A)  Nasal cavity → pharynx → larynx → bronchial tree → alveoli 
B)  Nasal cavity → larynx → pharynx → bronchial tree → alveoli 
C)  Nasal cavity → bronchial tree → pharynx → larynx → alveoli 
D)  Nasal cavity → larynx → bronchial tree→ pharynx → alveoli

During inspiration, why does air move into the lungs?

The respiratory centers are located in the medulla oblongata and the __________ of the brainstem.

The receptors for the inflation reflex are most sensitive to what type of stimulus?

The chemical reaction between __________ is catalyzed by the enzyme carbonic anhydrase.

What results from the breathing pattern called hyperventilation?

The most common form of lung cancer originates from what cell type?

The P _CO2 of blood in systemic capillaries is __________ than the P _CO2 of the blood in pulmonary capillaries.

Without surfactant, the surface tension within the alveoli of the lungs would cause __________.

What type of tissue forms the lining of the nasal cavities?

How is oxygen transported in the blood?

Why is laryngitis a potentially dangerous condition?

At the end of a quiet expiration, an additional volume of air can be expelled from the lungs. What is this additional amount of air called?

During __________, air movement is due to increased air pressure in the lungs.

An increase in blood P _CO2 results in a(n) __________ in pH.

What structures form a respiratory membrane?

What forms the respiratory membrane?

A breathing pattern that eliminates too much CO ₂ is called hyperventilation.

How is carbaminohemoglobin formed?

The __________ respiratory group is responsible for the basic rhythm of breathing, stimulating the inspiratory muscles.

What is the pathway for airflow from the nasal cavity to the location of gas exchange within the lungs?

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Muscular System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

Urinary System

Water, Electrolyte, and Acid-Base Balance

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Filters

Exam 16: Respiratory System

During inspiration, why does air move into the lungs?

The respiratory centers are located in the medulla oblongata and the __________ of the brainstem.

The receptors for the inflation reflex are most sensitive to what type of stimulus?

The chemical reaction between __________ is catalyzed by the enzyme carbonic anhydrase.

What results from the breathing pattern called hyperventilation?

The most common form of lung cancer originates from what cell type?

The P CO2 of blood in systemic capillaries is __________ than the P CO2 of the blood in pulmonary capillaries.

Without surfactant, the surface tension within the alveoli of the lungs would cause __________.

What type of tissue forms the lining of the nasal cavities?

How is oxygen transported in the blood?

Why is laryngitis a potentially dangerous condition?

At the end of a quiet expiration, an additional volume of air can be expelled from the lungs. What is this additional amount of air called?

During __________, air movement is due to increased air pressure in the lungs.

An increase in blood P CO2 results in a(n) __________ in pH.

What structures form a respiratory membrane?

What forms the respiratory membrane?

A breathing pattern that eliminates too much CO 2 is called hyperventilation.

How is carbaminohemoglobin formed?

The __________ respiratory group is responsible for the basic rhythm of breathing, stimulating the inspiratory muscles.

What is the pathway for airflow from the nasal cavity to the location of gas exchange within the lungs?

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Muscular System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Filters

The P _CO2 of blood in systemic capillaries is __________ than the P _CO2 of the blood in pulmonary capillaries.

An increase in blood P _CO2 results in a(n) __________ in pH.

A breathing pattern that eliminates too much CO ₂ is called hyperventilation.