PARAMEDIC FISDAP AIRWAY ACTUAL EXAM QUESTIONS AND ANSWERS
PRACTICE QUESTIONS WITH SOLUTIONS NEWEST | ALREADY GRADED A+
Question 1
Which of the following describes the anatomical boundaries of the upper airway?
A) From the nares to the pulmonary capillary membrane
B) All structures above the level of the vocal cords
C) From the larynx to the mainstem bronchi
D) The pharynx, trachea, and alveoli
E) Structures starting at the glottis and ending at the carina
Correct Answer: B) All structures above the level of the vocal cords
Rationale: The upper airway consists of the nose, mouth, jaw, oral cavity, and pharynx. Its
primary function is to warm, filter, and humidify air before it reaches the lower airway.
The anatomical "cutoff" between the upper and lower airway is the vocal cords (glottic
opening).
Question 2
What is the primary physiological purpose of the turbinates located within the nasal cavity?
A) To act as a secondary site for surgical airway access
B) To provide structural support for the hyoid bone
C) To increase the surface area of the nasal mucosa for warming and filtering air
D) To prevent the tongue from obstructing the posterior pharynx
E) To signal the medulla to initiate the Hering-Breuer reflex
Correct Answer: C) To increase the surface area of the nasal mucosa for warming and
filtering air
Rationale: Turbinates are shelf-like structures in the nasal cavity. By increasing the surface
area of the mucous membranes, they ensure that inhaled air is effectively warmed to body
temperature, filtered of contaminants, and humidified before entering the lungs.
Question 3
Which laryngeal structure is characterized as the only complete cartilaginous ring of the trachea
and forms the lowest portion of the larynx?
A) Thyroid cartilage
B) Epiglottis
C) Arytenoid cartilage
D) Cricoid cartilage
E) Hyoid bone
Correct Answer: D) Cricoid cartilage
Rationale: The cricoid cartilage (or cricoid ring) is unique because it is the only complete
circular ring of the trachea. It lies inferior to the thyroid cartilage and is often used during
the Sellick maneuver to prevent gastric regurgitation during intubation.
Question 4
A paramedic is preparing to perform a needle cricothyrotomy. Which anatomical landmark
, 2
identifies the correct site for emergency surgical or nonsurgical access?
A) Between the hyoid bone and the thyroid cartilage
B) Directly superior to the thyroid notch
C) Between the thyroid cartilage and the cricoid cartilage
D) At the level of the second tracheal ring
E) Directly at the bifurcation of the carina
Correct Answer: C) Between the thyroid cartilage and the cricoid cartilage
Rationale: The cricothyroid membrane is the ideal site for emergency airway access because
it is relatively superficial and lacks major blood vessels or nerves. It is located in the
palpable "dip" between the Adam’s apple (thyroid cartilage) and the cricoid ring.
Question 5
When utilizing a Macintosh (curved) laryngoscope blade, the tip of the blade should be placed
into which anatomical "pocket"?
A) The glottic opening
B) The esophagus
C) The pyriform sinus
D) The vallecula
E) The posterior oropharynx
Correct Answer: D) The vallecula
Rationale: The vallecula is an anatomic space located between the base of the tongue and
the epiglottis. Placing the Macintosh blade here and lifting forward indirectly lifts the
epiglottis to reveal the vocal cords. In contrast, a Miller (straight) blade is designed to lift
the epiglottis directly.
Question 6
Which protective reflex results in the spasmodic closure of the vocal cords when the airway is
stimulated by foreign material or water?
A) The Hering-Breuer reflex
B) Laryngospasm
C) Bronchoconstriction
D) Vagal syncope
E) The cough reflex
Correct Answer: B) Laryngospasm
Rationale: Laryngospasm is a defensive mechanism intended to seal off the lungs from
aspiration. However, it can make ventilation and intubation extremely difficult. It is often
triggered by "wet" intubation attempts, blood, or vomit near the cords.
Question 7
The trachea divides into the right and left mainstem bronchi at the level of the:
A) Cricoid ring
, 3
B) Mediastinum
C) Thyroid notch
D) Carina
E) Xiphoid process
Correct Answer: D) Carina
Rationale: The carina is the point at which the trachea bifurcates into the left and right
mainstem bronchi. Stimulation of the carina during suctioning often triggers vigorous
coughing or a vasovagal response.
Question 8
Which cells are responsible for producing the mucus that traps small particles and contaminants
within the respiratory tree?
A) Alveolar type II cells
B) Goblet cells
C) Beta-2 receptors
D) Macrophages
E) Parietal cells
Correct Answer: B) Goblet cells
Rationale: Goblet cells line the trachea and bronchi. They secrete mucus that coats the
lining of the airway to trap dust, pollen, and bacteria, which are then moved upward by
cilia (the mucociliary escalator).
Question 9
Stimulation of the Beta-2 adrenergic receptors in the lower airway results in:
A) Bronchoconstriction
B) Increased mucus production
C) Bronchodilation
D) Decreased heart rate
E) Alveolar collapse
Correct Answer: C) Bronchodilation
Rationale: Beta-2 receptors are located in the smooth muscles of the bronchioles. When
stimulated (either by the sympathetic nervous system or medications like Albuterol), they
cause the smooth muscles to relax, leading to bronchodilation and improved airflow.
Question 10
Which of the following membranes covers the outer surface of the lungs?
A) Parietal pleura
B) Mediastinum
C) Visceral pleura
D) Pericardium
E) Endothelium
, 4
Correct Answer: C) Visceral pleura
Rationale: The visceral pleura is the thin, slippery membrane that adheres directly to the
lung tissue. The parietal pleura lines the inside of the chest cavity. The potential space
between them allows for smooth expansion during breathing.
Question 11
The actual exchange of oxygen and carbon dioxide at the cellular level or between the alveoli
and pulmonary capillaries is known as:
A) Ventilation
B) Oxygenation
C) Respiration
D) Perfusion
E) Diffusion
Correct Answer: C) Respiration
Rationale: While ventilation is the mechanical act of moving air, respiration is the actual gas
exchange. External respiration occurs in the lungs (alveoli/capillaries), and internal
respiration occurs between the blood and the body tissues.
Question 12
During normal inhalation, which physiological process occurs to move air into the lungs?
A) Positive pressure is applied by the intercostal muscles
B) The diaphragm relaxes and moves upward
C) The thoracic cage expands, creating negative pressure (a vacuum)
D) Atmospheric pressure drops below intrathoracic pressure
E) The phrenic nerve inhibits the intercostal muscles
Correct Answer: C) The thoracic cage expands, creating negative pressure (a vacuum)
Rationale: Normal human breathing is "negative pressure ventilation." When the
diaphragm contracts and descends, the volume of the chest increases, which decreases the
pressure inside the lungs relative to the atmosphere, pulling air in.
Question 13
What is the standard "Dead Space" volume in a healthy adult male?
A) 500 ml
B) 6,000 ml
C) 150 ml
D) 1,200 ml
E) 350 ml
Correct Answer: C) 150 ml
Rationale: Dead space (anatomic dead space) is the portion of tidal volume that remains in
the conducting airways (trachea, bronchi) and does not participate in gas exchange. In an
average adult, this is approximately 150 ml.
PRACTICE QUESTIONS WITH SOLUTIONS NEWEST | ALREADY GRADED A+
Question 1
Which of the following describes the anatomical boundaries of the upper airway?
A) From the nares to the pulmonary capillary membrane
B) All structures above the level of the vocal cords
C) From the larynx to the mainstem bronchi
D) The pharynx, trachea, and alveoli
E) Structures starting at the glottis and ending at the carina
Correct Answer: B) All structures above the level of the vocal cords
Rationale: The upper airway consists of the nose, mouth, jaw, oral cavity, and pharynx. Its
primary function is to warm, filter, and humidify air before it reaches the lower airway.
The anatomical "cutoff" between the upper and lower airway is the vocal cords (glottic
opening).
Question 2
What is the primary physiological purpose of the turbinates located within the nasal cavity?
A) To act as a secondary site for surgical airway access
B) To provide structural support for the hyoid bone
C) To increase the surface area of the nasal mucosa for warming and filtering air
D) To prevent the tongue from obstructing the posterior pharynx
E) To signal the medulla to initiate the Hering-Breuer reflex
Correct Answer: C) To increase the surface area of the nasal mucosa for warming and
filtering air
Rationale: Turbinates are shelf-like structures in the nasal cavity. By increasing the surface
area of the mucous membranes, they ensure that inhaled air is effectively warmed to body
temperature, filtered of contaminants, and humidified before entering the lungs.
Question 3
Which laryngeal structure is characterized as the only complete cartilaginous ring of the trachea
and forms the lowest portion of the larynx?
A) Thyroid cartilage
B) Epiglottis
C) Arytenoid cartilage
D) Cricoid cartilage
E) Hyoid bone
Correct Answer: D) Cricoid cartilage
Rationale: The cricoid cartilage (or cricoid ring) is unique because it is the only complete
circular ring of the trachea. It lies inferior to the thyroid cartilage and is often used during
the Sellick maneuver to prevent gastric regurgitation during intubation.
Question 4
A paramedic is preparing to perform a needle cricothyrotomy. Which anatomical landmark
, 2
identifies the correct site for emergency surgical or nonsurgical access?
A) Between the hyoid bone and the thyroid cartilage
B) Directly superior to the thyroid notch
C) Between the thyroid cartilage and the cricoid cartilage
D) At the level of the second tracheal ring
E) Directly at the bifurcation of the carina
Correct Answer: C) Between the thyroid cartilage and the cricoid cartilage
Rationale: The cricothyroid membrane is the ideal site for emergency airway access because
it is relatively superficial and lacks major blood vessels or nerves. It is located in the
palpable "dip" between the Adam’s apple (thyroid cartilage) and the cricoid ring.
Question 5
When utilizing a Macintosh (curved) laryngoscope blade, the tip of the blade should be placed
into which anatomical "pocket"?
A) The glottic opening
B) The esophagus
C) The pyriform sinus
D) The vallecula
E) The posterior oropharynx
Correct Answer: D) The vallecula
Rationale: The vallecula is an anatomic space located between the base of the tongue and
the epiglottis. Placing the Macintosh blade here and lifting forward indirectly lifts the
epiglottis to reveal the vocal cords. In contrast, a Miller (straight) blade is designed to lift
the epiglottis directly.
Question 6
Which protective reflex results in the spasmodic closure of the vocal cords when the airway is
stimulated by foreign material or water?
A) The Hering-Breuer reflex
B) Laryngospasm
C) Bronchoconstriction
D) Vagal syncope
E) The cough reflex
Correct Answer: B) Laryngospasm
Rationale: Laryngospasm is a defensive mechanism intended to seal off the lungs from
aspiration. However, it can make ventilation and intubation extremely difficult. It is often
triggered by "wet" intubation attempts, blood, or vomit near the cords.
Question 7
The trachea divides into the right and left mainstem bronchi at the level of the:
A) Cricoid ring
, 3
B) Mediastinum
C) Thyroid notch
D) Carina
E) Xiphoid process
Correct Answer: D) Carina
Rationale: The carina is the point at which the trachea bifurcates into the left and right
mainstem bronchi. Stimulation of the carina during suctioning often triggers vigorous
coughing or a vasovagal response.
Question 8
Which cells are responsible for producing the mucus that traps small particles and contaminants
within the respiratory tree?
A) Alveolar type II cells
B) Goblet cells
C) Beta-2 receptors
D) Macrophages
E) Parietal cells
Correct Answer: B) Goblet cells
Rationale: Goblet cells line the trachea and bronchi. They secrete mucus that coats the
lining of the airway to trap dust, pollen, and bacteria, which are then moved upward by
cilia (the mucociliary escalator).
Question 9
Stimulation of the Beta-2 adrenergic receptors in the lower airway results in:
A) Bronchoconstriction
B) Increased mucus production
C) Bronchodilation
D) Decreased heart rate
E) Alveolar collapse
Correct Answer: C) Bronchodilation
Rationale: Beta-2 receptors are located in the smooth muscles of the bronchioles. When
stimulated (either by the sympathetic nervous system or medications like Albuterol), they
cause the smooth muscles to relax, leading to bronchodilation and improved airflow.
Question 10
Which of the following membranes covers the outer surface of the lungs?
A) Parietal pleura
B) Mediastinum
C) Visceral pleura
D) Pericardium
E) Endothelium
, 4
Correct Answer: C) Visceral pleura
Rationale: The visceral pleura is the thin, slippery membrane that adheres directly to the
lung tissue. The parietal pleura lines the inside of the chest cavity. The potential space
between them allows for smooth expansion during breathing.
Question 11
The actual exchange of oxygen and carbon dioxide at the cellular level or between the alveoli
and pulmonary capillaries is known as:
A) Ventilation
B) Oxygenation
C) Respiration
D) Perfusion
E) Diffusion
Correct Answer: C) Respiration
Rationale: While ventilation is the mechanical act of moving air, respiration is the actual gas
exchange. External respiration occurs in the lungs (alveoli/capillaries), and internal
respiration occurs between the blood and the body tissues.
Question 12
During normal inhalation, which physiological process occurs to move air into the lungs?
A) Positive pressure is applied by the intercostal muscles
B) The diaphragm relaxes and moves upward
C) The thoracic cage expands, creating negative pressure (a vacuum)
D) Atmospheric pressure drops below intrathoracic pressure
E) The phrenic nerve inhibits the intercostal muscles
Correct Answer: C) The thoracic cage expands, creating negative pressure (a vacuum)
Rationale: Normal human breathing is "negative pressure ventilation." When the
diaphragm contracts and descends, the volume of the chest increases, which decreases the
pressure inside the lungs relative to the atmosphere, pulling air in.
Question 13
What is the standard "Dead Space" volume in a healthy adult male?
A) 500 ml
B) 6,000 ml
C) 150 ml
D) 1,200 ml
E) 350 ml
Correct Answer: C) 150 ml
Rationale: Dead space (anatomic dead space) is the portion of tidal volume that remains in
the conducting airways (trachea, bronchi) and does not participate in gas exchange. In an
average adult, this is approximately 150 ml.
