Respiratory System Anatomy and Physiology
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Questions and Answers

What is the primary function of the respiratory system related to blood pH?

  • Protection from inhaled pathogens
  • Homeostatic regulation of blood pH (correct)
  • Vocalization
  • Exchange of gases between atmosphere and blood

    • How does air exchange occur in the respiratory system?

  • Using 3 principles of bulk flow (correct)
  • Through cellular respiration
  • By vocalization
  • Via movement of gases within the body cells

    • Which of the following is NOT a step in external respiration?

  • Production of energy in the cell (correct)
  • Transport of gases in the blood
  • Exchange I: atmosphere to air (ventilation)
  • Exchange II: lung to blood

    • What primarily influences the resistance in bulk flow within the respiratory system?

    <p>Length of the bronchial tubes</p> Signup and view all the answers

    Which muscle is responsible for expiration in the respiratory system?

    <p>External intercostals</p> Signup and view all the answers

    What is the function of the pleura in the lungs?

    <p>Hold lungs tight to thoracic wall</p> Signup and view all the answers

    Which structure in the respiratory system is responsible for producing saline above a layer of mucus?

    <p>Epithelial cells</p> Signup and view all the answers

    What is the primary cause of cystic fibrosis?

    <p>Reduced production of saline due to a genetic mutation</p> Signup and view all the answers

    How does nose breathing make air filtration more efficient in the respiratory system?

    <p>Utilizes nasal hair and mucus to filter foreign particles</p> Signup and view all the answers

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