Ventilation: Comprehensive
EMS Protocols and Anatomy
2026 Exam Questions and
Correct Answers | New Update
What structures make up the upper airway of an adult? - ANSWER
✔✔All the structures above the vocal cords.
,What is the lowest portion of the pharynx that opens into the larynx and
esophagus? - ANSWER ✔✔Laryngopharynx
What is true about the nasal cavity? - ANSWER ✔✔It is extremely
delicate and has a rich blood supply.
What structures prevent contaminants from entering the respiratory
tract? - ANSWER ✔✔Sinuses
What forms the posterior portion of the oral cavity? - ANSWER
✔✔Oropharynx
What is the most important anatomical consideration regarding an
adult's tongue? - ANSWER ✔✔Its tendency to fall back and occlude
the posterior pharynx.
What forms the anterior portion of the palate? - ANSWER ✔✔Maxilla
and palatine bones.
What is true about the tonsils? - ANSWER ✔✔They are comprised of
lymphatic tissue and help to trap bacteria.
What is the anatomic space located between the base of the tongue and
the epiglottis? - ANSWER ✔✔Vallecula
,What is directly anterior to the glottic opening? - ANSWER
✔✔Thyroid cartilage
Why must paramedics use caution when accessing the airway via the
cricothyroid membrane? - ANSWER ✔✔It is bordered laterally and
inferiorly by the highly vascular thyroid gland.
What happens to the vocal cords during forceful inhalation? -
ANSWER ✔✔They open widely to provide minimum resistance to air
flow.
What structures form the posterior attachment of the vocal cords? -
ANSWER ✔✔Arytenoid cartilages
What often occurs when airway devices are inadvertently inserted into
the pyriform fossae? - ANSWER ✔✔Tenting of the skin under the jaw.
What is laryngospasm? - ANSWER ✔✔Spasmodic closure of the
vocal cords.
What is the function of the lower airway? - ANSWER ✔✔To exchange
oxygen and carbon dioxide.
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, What is true about the trachea and mainstem bronchi? - ANSWER
✔✔They are lined with beta-2 receptors that result in bronchodilation
when stimulated.
How many lobes does the left lung have? - ANSWER ✔✔Two lobes.
What is surfactant? - ANSWER ✔✔A phospholipid compound that
decreases surface tension on the alveolar walls.
What causes atelectasis? - ANSWER ✔✔A deficiency of surfactant
causes alveolar collapse.
What is tidal volume? - ANSWER ✔✔The volume of air that is moved
into or out of the respiratory tract in one breath.
What increases physiologic dead space? - ANSWER ✔✔Pulmonary
obstructions.
How much air remains in the anatomic dead space of an adult with a
tidal volume of 500 mL? - ANSWER ✔✔150 mL.
What is the normal alveolar volume in a healthy adult? - ANSWER
✔✔350 mL.