Respiratory System Anatomy Overview
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Questions and Answers

What is the function of the conducting part of the respiratory system?

  • Transports atmospheric air to the alveoli (correct)
  • Humidifies and brings the air to body temperature
  • Performs the actual diffusion of O2 and CO2
  • Clears atmospheric air from foreign particles
  • Which part of the respiratory system is responsible for the exchange of oxygen and carbon dioxide?

  • Sternum
  • Conducting part
  • Alveoli and their ducts (correct)
  • Diaphragm
  • What anatomical feature forms the lower boundary of the thoracic chamber?

  • Vertebral column
  • Ventrally by the sternum
  • Dome-shaped diaphragm (correct)
  • Ribs
  • In the thoracic chamber, which structure forms the lateral boundaries?

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

    Which process involves drawing atmospheric air in and releasing CO2 rich alveolar air out?

    <p>Breathing or pulmonary ventilation</p> Signup and view all the answers

    Why is any change in the volume of the thoracic cavity reflected in the lung cavity?

    <p>To enable proper breathing</p> Signup and view all the answers

    What is the main purpose of cellular respiration?

    <p>Utilisation of O2 for catabolic reactions</p> Signup and view all the answers

    During which stage of breathing is atmospheric air drawn into the lungs?

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

    What initiates the process of inspiration during breathing?

    <p>Contraction of diaphragm</p> Signup and view all the answers

    What role do the external and internal intercostal muscles play in breathing?

    <p>Create pressure gradient between lungs and atmosphere</p> Signup and view all the answers

    When does expiration occur during breathing?

    <p>When intra-pulmonary pressure is higher than atmospheric pressure</p> Signup and view all the answers

    Which process involves the movement of air into and out of the lungs by creating a pressure gradient?

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

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