Respiratory Structure and Function Quiz
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Questions and Answers

The site of efficient gas exchange in the lung is the:

  • Pulmonary vein
  • Pulmonary capillaries
  • Pulmonary artery
  • Alveoli (correct)
  • How many capillaries are there per alveolus?

  • 200-400
  • 500-1000 (correct)
  • 50-100
  • 1000-1500
  • The shape of alveoli is primarily:

  • Cylindrical
  • Spherical
  • Polygonal (correct)
  • Cubical
  • Which of the following allows collateral ventilation in the lung?

    <p>Pores of Kohn</p> Signup and view all the answers

    What may cause the pores of Kohn to become enlarged?

    <p>Emphysema</p> Signup and view all the answers

    The openings that allow communication between bronchioles and alveoli include:

    <p>Interbronchiolar channels (of Martin)</p> Signup and view all the answers

    Which component allows for the movement of the lung root during inspiration?

    <p>Pulmonary ligament</p> Signup and view all the answers

    What is the primary role of the muscles of respiration in the chest wall?

    <p>To move the diaphragm and rib cage for breathing</p> Signup and view all the answers

    What is the main function of the conducting airways in the respiratory system?

    <p>Humidifying the inhaled air</p> Signup and view all the answers

    Which structure in the nasal cavity is responsible for producing turbulent airflow and collision of particles with mucus?

    <p>Turbinates</p> Signup and view all the answers

    What is the primary function of the respiratory system in relation to gas exchange?

    <p>Supplying metabolic needs of tissues with oxygen</p> Signup and view all the answers

    What does the pulmonary defense mechanism in the respiratory system involve?

    <p>Coughing and sneezing reflex responses</p> Signup and view all the answers

    What is the main function of alveoli in the respiratory system?

    <p>Transporting oxygen to the body's tissues</p> Signup and view all the answers

    What opposes the tendency of alveoli to collapse when compressed?

    <p>Interdependence of alveolar arrangement</p> Signup and view all the answers

    What is responsible for maintaining alveolar patency by reducing surface tension?

    <p>Thin layer of surfactant on the inner surface of alveoli</p> Signup and view all the answers

    How does the respiratory system contribute to vocalization?

    <p>By opening and closing vocal cords to control airflow</p> Signup and view all the answers

    What allows for the exchange of fresh oxygen for CO2 produced by cells of the body?

    <p>'Gas exchange' at the capillaries</p> Signup and view all the answers

    What is responsible for humidifying and warming inhaled air in the respiratory system?

    <p>'Mucous glands and cells' in conducting airways</p> Signup and view all the answers

    What is a key component involved in filtration of inhaled air in the respiratory system?

    <p>Production of mucus by mucous glands and cells</p> Signup and view all the answers

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