Respiratory System Structure: Tracheobronchial Tree
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Questions and Answers

What is the function of cilia in the respiratory system?

  • Produce surfactant
  • Help in gas exchange
  • Cause smooth muscle constriction
  • Beat upward towards the esophagus to clear debris (correct)
  • Where does gas exchange primarily occur in the respiratory system?

  • Bronchioles
  • Trachea
  • Respiratory bronchioles
  • Alveoli (correct)
  • What is the role of Type II pneumocytes in the respiratory membrane?

  • Contraction during asthma attacks
  • Gas exchange
  • Production of surfactant (correct)
  • Removal of debris and pathogens
  • Which structure in the respiratory system branches into tertiary bronchi?

    <p>Primary bronchi</p> Signup and view all the answers

    What is the function of dust cells in the alveoli?

    <p>Remove debris and pathogens</p> Signup and view all the answers

    Which part of the respiratory system lacks cartilage support but has smooth muscle that can constrict during an asthma attack?

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

    What is the term used to describe the exchange of chloride ions entering red blood cells and bicarbonate ions leaving, as a response to CO2 levels?

    <p>Bicarbonate shift</p> Signup and view all the answers

    In the context of carbon dioxide transport, what occurs in the pulmonary capillaries which leads to the formation of additional CO2?

    <p>Release of bicarbonate ions</p> Signup and view all the answers

    How does increased plasma carbon dioxide affect blood pH?

    <p>Lowers blood pH</p> Signup and view all the answers

    Which center in the medulla stimulates inspiratory muscles to establish breathing rhythm?

    <p>Inspiratory center</p> Signup and view all the answers

    What reflex limits the degree of inspiration and prevents overinflation of the lungs, particularly in infants?

    <p>Hering-Breuer Reflex</p> Signup and view all the answers

    The conscious control of ventilation can be influenced by which factors?

    <p>Willfulness and pain</p> Signup and view all the answers

    What is the main function of external respiration?

    <p>Gas exchange between air in lungs and blood</p> Signup and view all the answers

    Which component of the respiratory system is primarily responsible for voice production?

    <p>Vocal folds</p> Signup and view all the answers

    What is one of the functions of the upper respiratory tract?

    <p>Protection against microorganisms</p> Signup and view all the answers

    In the respiratory system, where do bronchioles end?

    <p>At alveoli</p> Signup and view all the answers

    What event leads to the production of sound during voice production?

    <p>Movement of air over vocal folds</p> Signup and view all the answers

    Which part of the nose is responsible for smell?

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

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