Respiratory System Anatomy
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Questions and Answers

Which component of the respiratory system is responsible for the spongy structure of the lungs?

  • Alveolar ducts
  • Capillaries
  • Respiratory bronchioles
  • Alveolar sacs (correct)
  • What is the function of the thin interalveolar septa between neighboring alveoli?

  • To facilitate exchange of oxygen and carbon dioxide
  • To connect alveoli with the respiratory membrane
  • To support the structure of the lungs
  • To separate air in the alveoli from capillary blood (correct)
  • What is the composition of the air-blood barrier or respiratory membrane?

  • An alveolar type II cell, a capillary endothelial cell, and their basement membranes
  • An alveolar sac cell, a capillary endothelial cell, and their basement membranes
  • An alveolar type I cell, a capillary endothelial cell, and their fused basement membranes (correct)
  • A respiratory bronchial cell, an alveolar duct cell, and their basement membranes
  • What type of blood is found in the capillaries surrounding each alveolus?

    <p>Mixed deoxygenated blood</p> Signup and view all the answers

    Which structure facilitates the exchange of oxygen and carbon dioxide in the respiratory system?

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

    Which structure in the respiratory region leads to an alveolar duct?

    <p>Respiratory bronchioles</p> Signup and view all the answers

    What is the function of type II alveolar cells?

    <p>All of the above</p> Signup and view all the answers

    What forms a continuous series of alveoli at the end of an alveolar duct?

    <p>Cluster of alveoli</p> Signup and view all the answers

    Which of the following is NOT a component of the blood-air barrier?

    <p>Basal laminae of epithelial cells</p> Signup and view all the answers

    Where are gas exchanges primarily happening?

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

    What is the surfactant material secreted by exocrine club cells and type II alveolar cells composed of?

    <p>All of the above</p> Signup and view all the answers

    What is the primary function of alveolar pores?

    <p>To equalize air pressure in neighboring alveoli</p> Signup and view all the answers

    What is the main component of pulmonary surfactant?

    <p>Lecithin and sphingomyelin</p> Signup and view all the answers

    What is the primary function of Type I alveolar cells?

    <p>To maintain the alveolar side of the blood-air barrier</p> Signup and view all the answers

    What is the result of lack of adequate surfactant in premature neonates?

    <p>Respiratory distress</p> Signup and view all the answers

    What is the purpose of the L/S ratio test?

    <p>To determine fetal lung maturity</p> Signup and view all the answers

    What is the function of Type II alveolar cells?

    <p>To produce pulmonary surfactant</p> Signup and view all the answers

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