BIOL 3320 - Respiratory System Test Questions with Correct Answers Latest 2025
Place the following structures in the correct order through which a molecule of air would pass as it
moves from the nose to the alveoli. - Answers 1. Nasopharynx
2. Oropharynx
3.Laryngopharynx
4. Trachea
5. Carina
6. Main Bronchi
7. Lobar Bronchi
8. Segmental Bronchi
9. Bronchiole
10. Terminal Bronchiole
11. Respiratory Bronchiole
Which of the following are bicarbonate ions exchanged for when they diffuse from plasma back into red
blood cells? - Answers Chloride ions
At the respiratory membrane, the partial pressure of carbon dioxide in the plasma is _____ than in the
_____ of the lungs. - Answers higher, alveoli
Place the labels in the correct sequence, indicating the order this reversible reaction will occur within
the PULMONARY CAPILLARIES. You should start with and end with either carbon dioxide or bicarbonate.
- Answers HCO3- + H+ --> H2CO3 --> H2O + CO2
The___ is the amount of air remaining in the lungs after a forced expiration. - Answers residual volume
The volume of air exchanged during normal breathing is called the_____. - Answers tidal volume
After a normal inspiration, the amount of air that can be inspired forcefully is called the ____ - Answers
inspiratory reserve volume
If you subtract the residual volume from the total lung capacity, you get the ____ - Answers vital
capacity
The vital capacity minus the _____ equals the inspiratory capacity - Answers expiratory reserve volume
The effects of obstructive diseases such as asthma or emphysema may be determined by measuring the
____ - Answers forced expiratory volume
, ______ law states that the amount of gas dissolving in water is determined by its partial pressure. -
Answers Henry's
Thus, the greater the Po₂ in the alveolar air, the more _____ the blood picks up - Answers oxygen
Since blood arriving at the alveolus has a ____ Pco2 than air, it releases CO2 into the air. - Answers
higher
Each gas in a mixture behaves _____ - Answers independently
The diffusion of one gas does not ____ the diffusion of another - Answers influence
Which of the following structures are part of the conducting zone of the respiratory system? Check all
that apply. - Answers pharynx, larynx, trachea, main bronchi
Because gas exchange does not occur within the conducting zone of the respiratory system, it is also
referred to as what? - Answers anatomical dead space
When the production of surfactant by _____ alveolar cells is insufficient, premature infants typically
have trouble keeping their alveoli inflated - Answers type-II
Classified as simple squamous epithelial cells, the majority of the alveolar surface is covered by _____
alveolar cells. - Answers type-I
Microscopic examination of lung tissue from a patient who died from bacterial pneumonia would reveal
large numbers of ______ - Answers macrophages
The layer of the respiratory membrane that is furthest away from the alveolar air spaces is the
membrane of the _______ - Answers capillary endothelial cell
Place the respiratory structures into the order that air would pass through them during a normal
inspiration. - Answers Outside of body
1. Trachea
2. Primary bronchus
3. Secondary bronchus
4. Tertiary bronchus
5. Bronchiole
6. Terminal bronchiole
7. Respiratory bronchiole
8. Alveolar duct
Place the following structures in the correct order through which a molecule of air would pass as it
moves from the nose to the alveoli. - Answers 1. Nasopharynx
2. Oropharynx
3.Laryngopharynx
4. Trachea
5. Carina
6. Main Bronchi
7. Lobar Bronchi
8. Segmental Bronchi
9. Bronchiole
10. Terminal Bronchiole
11. Respiratory Bronchiole
Which of the following are bicarbonate ions exchanged for when they diffuse from plasma back into red
blood cells? - Answers Chloride ions
At the respiratory membrane, the partial pressure of carbon dioxide in the plasma is _____ than in the
_____ of the lungs. - Answers higher, alveoli
Place the labels in the correct sequence, indicating the order this reversible reaction will occur within
the PULMONARY CAPILLARIES. You should start with and end with either carbon dioxide or bicarbonate.
- Answers HCO3- + H+ --> H2CO3 --> H2O + CO2
The___ is the amount of air remaining in the lungs after a forced expiration. - Answers residual volume
The volume of air exchanged during normal breathing is called the_____. - Answers tidal volume
After a normal inspiration, the amount of air that can be inspired forcefully is called the ____ - Answers
inspiratory reserve volume
If you subtract the residual volume from the total lung capacity, you get the ____ - Answers vital
capacity
The vital capacity minus the _____ equals the inspiratory capacity - Answers expiratory reserve volume
The effects of obstructive diseases such as asthma or emphysema may be determined by measuring the
____ - Answers forced expiratory volume
, ______ law states that the amount of gas dissolving in water is determined by its partial pressure. -
Answers Henry's
Thus, the greater the Po₂ in the alveolar air, the more _____ the blood picks up - Answers oxygen
Since blood arriving at the alveolus has a ____ Pco2 than air, it releases CO2 into the air. - Answers
higher
Each gas in a mixture behaves _____ - Answers independently
The diffusion of one gas does not ____ the diffusion of another - Answers influence
Which of the following structures are part of the conducting zone of the respiratory system? Check all
that apply. - Answers pharynx, larynx, trachea, main bronchi
Because gas exchange does not occur within the conducting zone of the respiratory system, it is also
referred to as what? - Answers anatomical dead space
When the production of surfactant by _____ alveolar cells is insufficient, premature infants typically
have trouble keeping their alveoli inflated - Answers type-II
Classified as simple squamous epithelial cells, the majority of the alveolar surface is covered by _____
alveolar cells. - Answers type-I
Microscopic examination of lung tissue from a patient who died from bacterial pneumonia would reveal
large numbers of ______ - Answers macrophages
The layer of the respiratory membrane that is furthest away from the alveolar air spaces is the
membrane of the _______ - Answers capillary endothelial cell
Place the respiratory structures into the order that air would pass through them during a normal
inspiration. - Answers Outside of body
1. Trachea
2. Primary bronchus
3. Secondary bronchus
4. Tertiary bronchus
5. Bronchiole
6. Terminal bronchiole
7. Respiratory bronchiole
8. Alveolar duct
