Respiratory System Mechanics Quiz
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Questions and Answers

What is the term for the trapped air and PEEP caused by inadequate expiratory time?

  • High airway resistance
  • Weak lung recoil force
  • Auto-PEEP (correct)
  • Abnormally long expiratory times

    • What type of flow requires a higher driving pressure than laminar flow to produce a given flow rate?

  • Chaotic, with many churning eddy currents (correct)
  • Organized in discrete streamlines
  • Poiseuille's law
  • Doubling the flow rate

    • What is the decreased force-generating capacity of actively working muscles called?

  • Weakness
  • Fatigue (correct)
  • Respiratory muscle weakness
  • Increased accessory muscle use

    • What is the consequence of high respiratory rates coupled with high airway resistance or weak lung recoil force?

    <p>Pressure in some of the slowly emptying alveoli may still be positive when the next inspiration begins</p> Signup and view all the answers

    What influences the pressure required to produce a given flow rate through the airways?

    <p>Gas viscosity</p> Signup and view all the answers

    What is the outward movement of the abdomen lagging behind that of the rib cage during inspiration called?

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

    In turbulent flow, what is the pressure gradient proportional to?

    <p>The square of the flow rate</p> Signup and view all the answers

    What is the abdomen being sucked inward during inspiration as the rib cage expands outward called?

    <p>Abdominal Paradox</p> Signup and view all the answers

    What is the main issue of asthma patients and emphysema patients?

    <p>High airway resistance</p> Signup and view all the answers

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