Respiratory System Mechanics Quiz
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Questions and Answers

What happens when the intercostal muscles between the ribs contract during inhalation?

  • Ribs remain stationary
  • Ribs are pulled upwards and outwards (correct)
  • Ribs move in a circular motion
  • Ribs are pushed downwards and inwards

    • What is the role of the diaphragm during exhalation?

  • Relaxes and moves back to its normal position (correct)
  • Contracts and moves downwards
  • Expands and pushes upwards
  • Remains immobile

    • What happens to the volume inside the chest cavity during inhalation?

  • Remains constant
  • Decreases
  • Increases (correct)
  • Fluctuates irregularly

    • What causes the pressure inside the chest cavity to decrease during inhalation?

    <p>Increase in volume</p> Signup and view all the answers

    How is air expelled from the lungs during exhalation?

    <p>Air is squeezed out of the lungs</p> Signup and view all the answers

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