Respiratory System Anatomy: Nose and Pharynx Functions
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Questions and Answers

What is the main cause for an increase in breathing rate?

  • Increased oxygen in the blood
  • High concentration of lactate in the blood
  • Decreased pH of the blood
  • High concentration of CO2 in the blood (correct)

    • What stimulates the chemoreceptors to increase breathing?

  • An increase in carbon dioxide levels
  • A large drop in oxygen levels (correct)
  • A decrease in blood pH
  • A decrease in body temperature

    • What is hypernea?

  • Low blood pH causing irregular breathing
  • Decreased rate and depth of breathing
  • Increased rate and depth of breathing (correct)
  • Shallow breathing due to pain

    • What is the function of fetal breathing movements in the womb?

    <p>To practice for breathing air after birth</p> Signup and view all the answers

    What causes altitude sickness to start around 8000 feet high?

    <p>Low blood oxygen levels</p> Signup and view all the answers

    How does carbon dioxide get transported in the blood?

    <p>In the form of bicarbonate dissolved in plasma</p> Signup and view all the answers

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

    <p>To warm and humidify incoming air</p> Signup and view all the answers

    Where does the gas exchange primarily occur in the respiratory system?

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

    What is the role of cilia in the nose?

    <p>To push mucus and debris towards the throat</p> Signup and view all the answers

    Which structure closes off the trachea during swallowing to prevent food from entering the airway?

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

    What is the purpose of the carina in the bronchial tree?

    <p>To divide into right and left bronchi</p> Signup and view all the answers

    What structure connects the trachea to the pharynx?

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

    What happens when the intrapleural pressure becomes higher than intra-alveolar pressure?

    <p>Inspiration occurs</p> Signup and view all the answers

    Which parameter determines lung expansion according to Boyles law?

    <p>'Pressure and volume are inversely related'</p> Signup and view all the answers

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