RespiRatoRy CaRe anatomy and
physiology 3Rd edition by beaChey | Full
test bank (500 Questions) | VeRiFied a+
answeRs & detailed Rationales | 2025-
2026 tmC & nCleX eXam Ready
Master the Beachey Respiratory Care Anatomy & Physiology (3rd Ed) with this 500-
question test bank. Covering ABG interpretation, hemodynamics, neuro-regulation,
and lung mechanics, each question features bold italic answers and italic rationales.
Designed for RT and nursing students, this updated 2025-2026 guide uses the ATI
Priority-Setting Framework to guarantee Level 3 mastery. Perfect for TMC, NCLEX, and
final exam prep. Verified content for A+ results!
1. Which of the following is the primary function of the upper airway?
A. Gas exchange
B. Humidification and filtration of inspired air
C. Regulation of acid-base balance
D. Production of surfactant
Rationale: The upper airway (nose, mouth, pharynx) acts as a humidifier, heater, and
filter for air before it reaches the lower respiratory tract.
2. The space between the vocal cords is known as the:
A. Epiglottis
B. Glottis
C. Vallecula
D. Carina
Rationale: The glottis is the narrowest part of the adult airway and is the opening
between the true vocal folds.
3. Which cartilage is the only complete circular ring in the respiratory tract?
A. Thyroid
B. Arytenoid
C. Cricoid
D. Epiglottis
Rationale: The cricoid cartilage forms a complete ring at the base of the larynx, serving
as a landmark for emergency airway procedures.
,4. What is the anatomical term for the bifurcation of the trachea?
A. Hylum
B. Carina
C. Bronchiole
D. Septum
Rationale: The carina is the sensitive ridge where the trachea splits into the right and left
mainstem bronchi; stimulation here triggers a vigorous cough.
5. Why is a misplaced endotracheal tube more likely to enter the right mainstem
bronchus?
A. It is narrower than the left.
B. It is wider, shorter, and more vertical than the left.
C. It is further away from the heart.
D. It has fewer lobes to supply.
Rationale: The right mainstem bronchus leaves the trachea at a 25-degree angle (more
vertical), making it the "path of least resistance" for tubes or aspirated objects.
6. Which type of alveolar cell is responsible for the production of pulmonary surfactant?
A. Type I cell
B. Type II cell
C. Alveolar Macrophage
D. Goblet cell
Rationale: Type II pneumocytes (granular cells) produce surfactant, which reduces
surface tension to prevent alveolar collapse.
7. What is the primary role of surfactant?
A. To increase lung compliance
B. To reduce surface tension in the alveoli
C. To trap bacteria
D. To facilitate oxygen transport
Rationale: By reducing surface tension, surfactant prevents the alveoli from collapsing at
the end of exhalation (atelectasis).
8. The majority of the airway's "mucociliary escalator" is found in which layer?
A. Adventitia
B. Submucosa
C. Mucosa (Epithelium)
D. Lamina propria
Rationale: The ciliated pseudostratified columnar epithelium contains the cilia and
goblet cells responsible for moving mucus.
,9. Which nerve innervates the diaphragm?
A. Vagus nerve
B. Phrenic nerve
C. Glossopharyngeal nerve
D. Intercostal nerve
Rationale: The phrenic nerve (arising from C3-C5) provides the motor stimulus for the
diaphragm to contract.
10. According to Boyle's Law, if the volume of the thoracic cavity increases, the pressure:
A. Increases
B. Decreases
C. Stays the same
D. Becomes atmospheric
Rationale: Boyle’s Law states that pressure and volume are inversely proportional. As
volume expands during inspiration, pressure drops, pulling air into the lungs.
11. Which muscle is considered an "accessory" muscle of inspiration?
A. Diaphragm
B. External intercostals
C. Sternocleidomastoid
D. Internal intercostals
Rationale: The sternocleidomastoid is used during respiratory distress to help lift the rib
cage.
12. What is the definition of "Tidal Volume"?
A. Maximum air you can breathe in
B. Volume of air moved in or out during a normal breath
C. Air left in the lungs after death
D. Total air the lungs can hold
Rationale: Tidal Volume (Vt) is the amount of air exchanged during a single, quiet
respiratory cycle.
13. The volume of air remaining in the lungs after a maximal exhalation is:
A. Functional Residual Capacity
B. Residual Volume
C. Expiratory Reserve Volume
D. Vital Capacity
Rationale: Residual Volume (RV) cannot be exhaled; it keeps the alveoli open and allows
for continuous gas exchange.
, 14. Which of the following equals Vital Capacity (VC)?
A. IRV + Vt + ERV + RV
B. IRV + Vt + ERV
C. Vt + ERV
D. FRC + RV
Rationale: Vital Capacity is the total "usable" volume of the lungs, excluding the Residual
Volume.
15. What is "Anatomic Dead Space"?
A. Alveoli that are not perfused
B. Volume of the conducting airways (no gas exchange)
C. A collapsed lung
D. The space in a ventilator circuit
Rationale: Anatomic dead space is the volume of air in the nose, trachea, and bronchi
where gas exchange does not occur.
16. A patient is hyperventilating. What do you expect to see on their ABG?
A. High PaCO2
B. Low PaCO2
C. Low pH
D. High HCO3
Rationale: Hyperventilation causes the body to "blow off" carbon dioxide, leading to a
decrease in PaCO2 (hypocapnia).
17. What is the normal pH range for arterial blood?
A. 7.00 - 7.10
B. 7.25 - 7.35
C. 7.35 - 7.45
D. 7.45 - 7.55
Rationale: The body must maintain a tight homeostatic pH between 7.35 and 7.45 for
enzyme and cellular function.
18. Which law explains that the total pressure of a gas mixture is the sum of its partial
pressures?
A. Boyle's Law
B. Henry's Law
C. Dalton's Law
D. Graham's Law
Rationale: Dalton’s Law is used to calculate the partial pressure of oxygen in the
atmosphere.
physiology 3Rd edition by beaChey | Full
test bank (500 Questions) | VeRiFied a+
answeRs & detailed Rationales | 2025-
2026 tmC & nCleX eXam Ready
Master the Beachey Respiratory Care Anatomy & Physiology (3rd Ed) with this 500-
question test bank. Covering ABG interpretation, hemodynamics, neuro-regulation,
and lung mechanics, each question features bold italic answers and italic rationales.
Designed for RT and nursing students, this updated 2025-2026 guide uses the ATI
Priority-Setting Framework to guarantee Level 3 mastery. Perfect for TMC, NCLEX, and
final exam prep. Verified content for A+ results!
1. Which of the following is the primary function of the upper airway?
A. Gas exchange
B. Humidification and filtration of inspired air
C. Regulation of acid-base balance
D. Production of surfactant
Rationale: The upper airway (nose, mouth, pharynx) acts as a humidifier, heater, and
filter for air before it reaches the lower respiratory tract.
2. The space between the vocal cords is known as the:
A. Epiglottis
B. Glottis
C. Vallecula
D. Carina
Rationale: The glottis is the narrowest part of the adult airway and is the opening
between the true vocal folds.
3. Which cartilage is the only complete circular ring in the respiratory tract?
A. Thyroid
B. Arytenoid
C. Cricoid
D. Epiglottis
Rationale: The cricoid cartilage forms a complete ring at the base of the larynx, serving
as a landmark for emergency airway procedures.
,4. What is the anatomical term for the bifurcation of the trachea?
A. Hylum
B. Carina
C. Bronchiole
D. Septum
Rationale: The carina is the sensitive ridge where the trachea splits into the right and left
mainstem bronchi; stimulation here triggers a vigorous cough.
5. Why is a misplaced endotracheal tube more likely to enter the right mainstem
bronchus?
A. It is narrower than the left.
B. It is wider, shorter, and more vertical than the left.
C. It is further away from the heart.
D. It has fewer lobes to supply.
Rationale: The right mainstem bronchus leaves the trachea at a 25-degree angle (more
vertical), making it the "path of least resistance" for tubes or aspirated objects.
6. Which type of alveolar cell is responsible for the production of pulmonary surfactant?
A. Type I cell
B. Type II cell
C. Alveolar Macrophage
D. Goblet cell
Rationale: Type II pneumocytes (granular cells) produce surfactant, which reduces
surface tension to prevent alveolar collapse.
7. What is the primary role of surfactant?
A. To increase lung compliance
B. To reduce surface tension in the alveoli
C. To trap bacteria
D. To facilitate oxygen transport
Rationale: By reducing surface tension, surfactant prevents the alveoli from collapsing at
the end of exhalation (atelectasis).
8. The majority of the airway's "mucociliary escalator" is found in which layer?
A. Adventitia
B. Submucosa
C. Mucosa (Epithelium)
D. Lamina propria
Rationale: The ciliated pseudostratified columnar epithelium contains the cilia and
goblet cells responsible for moving mucus.
,9. Which nerve innervates the diaphragm?
A. Vagus nerve
B. Phrenic nerve
C. Glossopharyngeal nerve
D. Intercostal nerve
Rationale: The phrenic nerve (arising from C3-C5) provides the motor stimulus for the
diaphragm to contract.
10. According to Boyle's Law, if the volume of the thoracic cavity increases, the pressure:
A. Increases
B. Decreases
C. Stays the same
D. Becomes atmospheric
Rationale: Boyle’s Law states that pressure and volume are inversely proportional. As
volume expands during inspiration, pressure drops, pulling air into the lungs.
11. Which muscle is considered an "accessory" muscle of inspiration?
A. Diaphragm
B. External intercostals
C. Sternocleidomastoid
D. Internal intercostals
Rationale: The sternocleidomastoid is used during respiratory distress to help lift the rib
cage.
12. What is the definition of "Tidal Volume"?
A. Maximum air you can breathe in
B. Volume of air moved in or out during a normal breath
C. Air left in the lungs after death
D. Total air the lungs can hold
Rationale: Tidal Volume (Vt) is the amount of air exchanged during a single, quiet
respiratory cycle.
13. The volume of air remaining in the lungs after a maximal exhalation is:
A. Functional Residual Capacity
B. Residual Volume
C. Expiratory Reserve Volume
D. Vital Capacity
Rationale: Residual Volume (RV) cannot be exhaled; it keeps the alveoli open and allows
for continuous gas exchange.
, 14. Which of the following equals Vital Capacity (VC)?
A. IRV + Vt + ERV + RV
B. IRV + Vt + ERV
C. Vt + ERV
D. FRC + RV
Rationale: Vital Capacity is the total "usable" volume of the lungs, excluding the Residual
Volume.
15. What is "Anatomic Dead Space"?
A. Alveoli that are not perfused
B. Volume of the conducting airways (no gas exchange)
C. A collapsed lung
D. The space in a ventilator circuit
Rationale: Anatomic dead space is the volume of air in the nose, trachea, and bronchi
where gas exchange does not occur.
16. A patient is hyperventilating. What do you expect to see on their ABG?
A. High PaCO2
B. Low PaCO2
C. Low pH
D. High HCO3
Rationale: Hyperventilation causes the body to "blow off" carbon dioxide, leading to a
decrease in PaCO2 (hypocapnia).
17. What is the normal pH range for arterial blood?
A. 7.00 - 7.10
B. 7.25 - 7.35
C. 7.35 - 7.45
D. 7.45 - 7.55
Rationale: The body must maintain a tight homeostatic pH between 7.35 and 7.45 for
enzyme and cellular function.
18. Which law explains that the total pressure of a gas mixture is the sum of its partial
pressures?
A. Boyle's Law
B. Henry's Law
C. Dalton's Law
D. Graham's Law
Rationale: Dalton’s Law is used to calculate the partial pressure of oxygen in the
atmosphere.
