Respiratory System: Diffusion and Perfusion
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Questions and Answers

What is the primary function of diffusion in the context of the respiratory system?

  • Movement of oxygen and carbon dioxide across the alveolar-capillary membrane (correct)
  • Delivery of blood to the capillaries
  • Exchanging oxygen and carbon dioxide between the body's cells and the environment
  • Moving air in and out of the lungs

    • Which process involves the physical act of moving air in and out of the lungs?

  • Diffusion
  • Perfusion
  • Respiration
  • Ventilation (correct)

    • What is the primary function of perfusion in the context of the respiratory system?

  • Physical act of moving air in and out of the lungs
  • Movement of oxygen and carbon dioxide across the alveolar-capillary membrane
  • Exchange of gases between the body's cells and the environment
  • Delivery of blood to the capillaries in the body's tissues and organs (correct)

    • Which term encompasses all processes of exchanging oxygen and carbon dioxide between the body's cells and the environment?

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

    Which process involves the delivery of blood to the capillaries in the body's tissues and organs?

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

    What is a part of respiration but not ventilation or perfusion?

    <p>Movement of oxygen and carbon dioxide across the alveolar-capillary membrane</p> Signup and view all the answers

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