40 Questions
Which of the following is NOT a function of the respiratory system?
Digestion of food particles
Which part of the respiratory system is lined with respiratory epithelium of the ciliated, pseudostratified columnar type?
Nasal cavity
What is the primary function of the Valsalva maneuver in the respiratory system?
Aiding in the expulsion of abdominal contents
Which statement best describes the importance of the respiratory system as a homeostatic mechanism?
It ensures that the concentrations of oxygen and carbon dioxide are sufficient to meet the body's demands
Which of the following is NOT an organ of the respiratory system?
Esophagus
Which of the following is the primary function of the larynx?
To prevent food and drink from entering the airway
What type of epithelium lines the nasopharynx?
Pseudostratified columnar epithelium
Which of the following structures is located in the nasopharynx?
Pharyngeal tonsil
What is the primary role of the oropharynx?
To serve as a passageway for both food and air
Which of the following cartilages is the largest in the larynx?
Thyroid cartilage
Which of the following statements about the bronchial tree is correct?
The main bronchi branch into lobar bronchi that supply each lobe of the lungs.
What is the primary function of the conducting zone in the respiratory system?
To provide airflow to the respiratory zone
Which of the following statements about the alveoli is incorrect?
Alveoli are the primary site for gas exchange in the respiratory system.
What is the correct sequence of airflow in the respiratory system?
Nasal cavity → pharynx → trachea → bronchi → bronchioles → alveoli
Which of the following cell types is responsible for producing surfactant in the alveoli?
Great alveolar cells
What is the function of the paranasal sinuses?
Increasing the resonance of speech
Which bones form the roof and walls of the nasal cavity?
Ethmoid and sphenoid bones
What is the purpose of the nasal conchae in the nasal cavity?
To cause airflow to be turbulent
How does the hard palate differ from the soft palate?
The hard palate is bony while the soft palate is fleshy
What sweeps sticky mucus into the pharynx in the respiratory system?
Cilia
Which of the following is NOT a function of alveolar macrophages?
Secreting pulmonary surfactant
What is the primary function of alveolar pores?
To connect adjacent alveoli
Which of the following statements about the pleura is incorrect?
The pleura is responsible for secreting pulmonary surfactant.
What is the primary function of the respiratory mucosa?
To protect the respiratory system from pathogens and particles
Which of the following structures is NOT involved in gas exchange?
Alveolar pores
Which of the following is NOT a function of the visceral pleura?
Protects the lungs from external pathogens
What is the primary function of the bronchial arteries?
To nourish the tissues of the lungs with oxygen and nutrients
Which of the following statements about external respiration is correct?
It refers to the loading of oxygen into the blood and the unloading of carbon dioxide from the blood in the alveoli
During cellular (aerobic) respiration, where does the oxidation of pyruvate occur?
In the mitochondria
What is the primary function of the respiratory mucosa?
To protect the respiratory system from pathogens and irritants
Which of the following is the primary function of the epiglottis during swallowing?
To prevent food and liquid from entering the trachea
What is the primary function of the cilia in the trachea?
To trap and remove foreign particles from the respiratory tract
Which of the following structures is primarily responsible for producing sound during speech?
Vocal cords
What is the primary function of the hyaline cartilage rings in the trachea?
To prevent the trachea from collapsing during inhalation
Which of the following structures is responsible for carrying air from the trachea to the gas-exchange surfaces in the lungs?
Bronchial tree
Which of the following is the primary function of the respiratory system as a homeostatic mechanism?
To facilitate the exchange of gases between the body and the environment
Which of the following structures is responsible for filtering, warming, and humidifying the incoming air during respiration?
Nasal cavity
Which of the following is NOT a function of the respiratory mucosa?
Producing sound during speech
Which of the following structures is primarily responsible for protecting the lower respiratory tract from foreign particles during swallowing?
Epiglottis
Which of the following is the correct order of the structures through which air passes during inhalation?
Nasal cavity → Larynx → Trachea → Bronchial tree → Lungs
This quiz covers the overall functions of the respiratory system, including gas exchange of oxygen and carbon dioxide in the lungs, communication through speech and vocalization, sense of smell, and maintenance of acid-base balance. Test your knowledge on these key aspects of the respiratory system.
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