Respiratory System: Nose Function and Cilia
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Questions and Answers

What is the main factor that affects breathing rate?

  • CO2 concentration in the blood (correct)
  • Body temperature
  • Oxygen concentration in the blood
  • Blood pressure

    • What stimulates chemoreceptors to increase breathing?

  • High O2 levels
  • A large drop in O2 levels (correct)
  • Increased blood pH
  • Low CO2 levels

    • What is hypernea?

  • Breathing cessation
  • Increased rate and depth of breathing (correct)
  • Decreased rate and depth of breathing
  • Shortness of breath

    • Which type of blood has hemoglobin with a greater affinity for oxygen?

    <p>Fetal blood</p> Signup and view all the answers

    At what altitude does altitude sickness typically start?

    <p>8000 feet</p> Signup and view all the answers

    When does the development of respiratory bronchioles begin during embryonic development?

    <p>Week 4</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

    What is the function 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 while swallowing to ensure food goes to the esophagus?

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

    Where does gas exchange directly occur in the respiratory system?

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

    What is the primary function of alveolar macrophages in the lungs?

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

    Which of the following describes the transpulmonary pressure?

    <p>Difference between intrapleural pressure and intra-alveolar pressure</p> Signup and view all the answers

    What causes inspiration during pulmonary ventilation?

    <p>Contractions of diaphragm and intercostal muscles</p> Signup and view all the answers

    Which term refers to a sequence of inspiration and expiration?

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

    'Tidal volume' is best described as:

    <p>Amount of air entering lungs during normal breathing</p> Signup and view all the answers

    What does 'total lung capacity' refer to?

    <p>Amount of air possible after a forceful inhalation</p> Signup and view all the answers

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