Respiratory System Function Quiz
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Questions and Answers

Which part of the respiratory system is responsible for the exchange of oxygen and carbon dioxide in the blood?

  • Bronchi
  • Trachea
  • Alveoli (correct)
  • Diaphragm

    • What is the function of the epiglottis in the respiratory system?

  • Producing mucus to moisten the air
  • Preventing food from entering the trachea (correct)
  • Assisting in vocal cord vibration
  • Regulating the size of the airway

    • Which of the following is a function of the cilia in the respiratory system?

  • Contracting and relaxing to control air flow
  • Producing surfactant to reduce surface tension in the alveoli
  • Filtering out dust and debris from the inhaled air (correct)
  • Secreting mucus to trap pathogens

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