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ANAT 100 Block Theory 3 Questions and
Answers (Expert Solutions)
Q: Primary functions of the respiratory system
ANS 🗹🗹: Gas exchange, gas conditioning, sound production, olfaction, and defense.
Q: Two cyclic phases of respiration
ANS 🗹🗹: Inspiration (oxygen-rich air enters the lungs) and expiration (oxygen-
poor air leaves the lungs).
Q: External respiration
ANS 🗹🗹: The exchange of gases between the air in the lungs and the blood in
pulmonary capillaries.
Q: Internal respiration
ANS 🗹🗹: The exchange of gases between blood in systemic capillaries and body
tissues.
Q: Gas conditioning
ANS 🗹🗹: It warms, humidifies, and cleanses air to prevent lung damage.
Q: Location of gas conditioning
ANS 🗹🗹: In the nasal cavity and paranasal sinuses.
Q: Defense against pathogens in the respiratory system
ANS 🗹🗹: Mucus, cilia, immune cells, and nasal hairs trap and remove pathogens.
Q: Role of cilia in the respiratory tract
ANS 🗹🗹: They beat in a coordinated motion to move mucus and trapped particles
out of the airways.
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Q: Conducting portion of the respiratory system
ANS 🗹🗹: Nose, nasal cavity, paranasal sinuses, pharynx, larynx, trachea, bronchi,
and terminal bronchioles.
Q: Respiratory portion of the respiratory system
ANS 🗹🗹: Respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli.
Q: Four paranasal sinuses
ANS 🗹🗹: Frontal, maxillary, ethmoid, and sphenoid sinuses.
Q: Function of the paranasal sinuses
ANS 🗹🗹: They lighten the skull, aid in gas conditioning, and serve as resonance
chambers for speech.
Q: Epithelium lining most of the nasal cavity
ANS 🗹🗹: Pseudostratified ciliated columnar epithelium.
Q: Contribution of nasal conchae to respiration
ANS 🗹🗹: They create turbulence, increasing air contact with the mucosa for better
conditioning.
Q: Function of goblet cells in the nasal cavity
ANS 🗹🗹: They secrete mucus that traps debris and humidifies incoming air.
Q: Role of the nasal septum
ANS 🗹🗹: It divides the nasal cavity into left and right halves.
Q: Structure connecting the nasal cavity to the pharynx
ANS 🗹🗹: The choanae.
Q: Function of olfactory epithelium
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ANS 🗹🗹: It contains olfactory receptor neurons responsible for detecting airborne
molecules and transmitting smell signals.
Q: Boundaries of the nasal cavity
ANS 🗹🗹: Roof (ethmoid bone), floor (hard palate), medial wall (nasal septum), and
lateral wall (nasal conchae).
Q: Function of nasal hairs (vibrissae)
ANS 🗹🗹: They trap large particles and debris before air enters the respiratory
tract.
Q: Three regions of the pharynx
ANS 🗹🗹: Nasopharynx, oropharynx, and laryngopharynx.
Q: Epithelium lining the nasopharynx
ANS 🗹🗹: Pseudostratified ciliated columnar epithelium for air filtration.
Q: Epithelium lining the oropharynx and laryngopharynx
ANS 🗹🗹: Stratified squamous epithelium for protection during swallowing.
Q: Primary function of the epiglottis
ANS 🗹🗹: To prevent food from entering the trachea during swallowing.
Q: Three major cartilages of the larynx
ANS 🗹🗹: Epiglottis, thyroid cartilage, and cricoid cartilage.
Q: Contribution of the thyroid cartilage to voice production
ANS 🗹🗹: It provides attachment for vocal cords.
Q: Function of the true vocal cords
ANS 🗹🗹: They vibrate to produce sound.
Q: Function of the false vocal cords
ANAT 100 Block Theory 3 Questions and
Answers (Expert Solutions)
Q: Primary functions of the respiratory system
ANS 🗹🗹: Gas exchange, gas conditioning, sound production, olfaction, and defense.
Q: Two cyclic phases of respiration
ANS 🗹🗹: Inspiration (oxygen-rich air enters the lungs) and expiration (oxygen-
poor air leaves the lungs).
Q: External respiration
ANS 🗹🗹: The exchange of gases between the air in the lungs and the blood in
pulmonary capillaries.
Q: Internal respiration
ANS 🗹🗹: The exchange of gases between blood in systemic capillaries and body
tissues.
Q: Gas conditioning
ANS 🗹🗹: It warms, humidifies, and cleanses air to prevent lung damage.
Q: Location of gas conditioning
ANS 🗹🗹: In the nasal cavity and paranasal sinuses.
Q: Defense against pathogens in the respiratory system
ANS 🗹🗹: Mucus, cilia, immune cells, and nasal hairs trap and remove pathogens.
Q: Role of cilia in the respiratory tract
ANS 🗹🗹: They beat in a coordinated motion to move mucus and trapped particles
out of the airways.
, Page | 2
Q: Conducting portion of the respiratory system
ANS 🗹🗹: Nose, nasal cavity, paranasal sinuses, pharynx, larynx, trachea, bronchi,
and terminal bronchioles.
Q: Respiratory portion of the respiratory system
ANS 🗹🗹: Respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli.
Q: Four paranasal sinuses
ANS 🗹🗹: Frontal, maxillary, ethmoid, and sphenoid sinuses.
Q: Function of the paranasal sinuses
ANS 🗹🗹: They lighten the skull, aid in gas conditioning, and serve as resonance
chambers for speech.
Q: Epithelium lining most of the nasal cavity
ANS 🗹🗹: Pseudostratified ciliated columnar epithelium.
Q: Contribution of nasal conchae to respiration
ANS 🗹🗹: They create turbulence, increasing air contact with the mucosa for better
conditioning.
Q: Function of goblet cells in the nasal cavity
ANS 🗹🗹: They secrete mucus that traps debris and humidifies incoming air.
Q: Role of the nasal septum
ANS 🗹🗹: It divides the nasal cavity into left and right halves.
Q: Structure connecting the nasal cavity to the pharynx
ANS 🗹🗹: The choanae.
Q: Function of olfactory epithelium
, Page | 3
ANS 🗹🗹: It contains olfactory receptor neurons responsible for detecting airborne
molecules and transmitting smell signals.
Q: Boundaries of the nasal cavity
ANS 🗹🗹: Roof (ethmoid bone), floor (hard palate), medial wall (nasal septum), and
lateral wall (nasal conchae).
Q: Function of nasal hairs (vibrissae)
ANS 🗹🗹: They trap large particles and debris before air enters the respiratory
tract.
Q: Three regions of the pharynx
ANS 🗹🗹: Nasopharynx, oropharynx, and laryngopharynx.
Q: Epithelium lining the nasopharynx
ANS 🗹🗹: Pseudostratified ciliated columnar epithelium for air filtration.
Q: Epithelium lining the oropharynx and laryngopharynx
ANS 🗹🗹: Stratified squamous epithelium for protection during swallowing.
Q: Primary function of the epiglottis
ANS 🗹🗹: To prevent food from entering the trachea during swallowing.
Q: Three major cartilages of the larynx
ANS 🗹🗹: Epiglottis, thyroid cartilage, and cricoid cartilage.
Q: Contribution of the thyroid cartilage to voice production
ANS 🗹🗹: It provides attachment for vocal cords.
Q: Function of the true vocal cords
ANS 🗹🗹: They vibrate to produce sound.
Q: Function of the false vocal cords
