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Respiratory System: Gas Exchange and Alveoli Structure
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Respiratory System: Gas Exchange and Alveoli Structure

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Questions and Answers

Which of the following structures is responsible for directing air into the lungs?

  • Bronchioles
  • Pharynx
  • Bronchi
  • Trachea (correct)
  • What is the primary function of the alveolar ducts?

  • To divide into alveolar sacs and eventually into alveoli (correct)
  • To filter out dust and bacteria from the inhaled air
  • To transport oxygen from the lungs to the heart
  • To sense the partial pressure of oxygen in the air
  • What is the name of the sac where gas exchange takes place in the lungs?

  • Pulmonary capillaries
  • Alveolar sac (correct)
  • Thoracic cavity
  • Respiratory bronchioles
  • What is the pathway of air inhaled through the mouth or nose?

    <p>Trachea, bronchi, bronchioles, alveolar ducts, alveoli</p> Signup and view all the answers

    What is the term for the smallest airways in the lungs?

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

    What is the function of the pulmonary capillaries in the lungs?

    <p>To facilitate gas exchange between the alveoli and the blood</p> Signup and view all the answers

    What is the point at which oxygen molecules move through a single layer of lung cells?

    <p>Individual alveolus</p> Signup and view all the answers

    What is the structure that connects the trachea to the lungs?

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

    What is the function of the pharynx in the respiratory system?

    <p>To direct air into the lungs</p> Signup and view all the answers

    What is the name of the tube that connects the throat to the lungs?

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

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