Physiological Dead Space and Ventilation-Perfusion Mismatch
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Questions and Answers

What happens when ventilation exceeds perfusion in the lungs?

  • Enhanced gas exchange efficiency
  • Increased physiological dead space (correct)
  • Improved lung compliance
  • Decreased physiological dead space
  • Why does physiological dead space occur?

  • Due to excessive perfusion
  • Due to equal ventilation and perfusion
  • Due to balanced ventilation and perfusion
  • Due to deficient perfusion (correct)
  • Which of the following scenarios would likely reduce physiological dead space?

  • Increased ventilation and increased perfusion
  • Increased ventilation and decreased perfusion
  • Decreased ventilation and decreased perfusion
  • Decreased ventilation and increased perfusion (correct)
  • What is the consequence of an imbalance where ventilation is less than perfusion?

    <p>Increased physiological dead space</p> Signup and view all the answers

    How does physiological dead space affect gas exchange in the lungs?

    <p>Reduces gas exchange efficiency</p> Signup and view all the answers

    What is the main focus of the Applied Physiology course 2 Lecture 18, 19, and 20?

    <p>Respiratory system</p> Signup and view all the answers

    Who is the intended audience for the Applied Physiology course 2 Lecture 18, 19, and 20?

    <p>Second-grade students at Uruk University</p> Signup and view all the answers

    Which department is responsible for the Applied Physiology course 2 Lecture 18, 19, and 20?

    <p>Department of Anesthesia Techniques</p> Signup and view all the answers

    Who is the lecturer for the Applied Physiology course 2 Lecture 18, 19, and 20?

    <p>Dr.</p> Signup and view all the answers

    What is the primary topic of the lecture series?

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

    What is the primary cause of a pulmonary physiological shunt?

    <p>Zero or low V/Q ratio due to insufficient ventilation and excess perfusion</p> Signup and view all the answers

    Which V/Q ratio is associated with a pulmonary physiological shunt?

    <p>Both low and zero V/Q ratios</p> Signup and view all the answers

    What effect does a pulmonary physiological shunt have on the V/Q ratio?

    <p>It decreases the V/Q ratio</p> Signup and view all the answers

    Which of the following best describes the cause of a pulmonary physiological shunt?

    <p>Insufficient ventilation and excess perfusion</p> Signup and view all the answers

    What is the relationship between ventilation and perfusion in a pulmonary physiological shunt?

    <p>Perfusion is greater than ventilation</p> Signup and view all the answers

    Study Notes

    Physiological Dead Space and Pulmonary Physiological Shunt

    • Physiological dead space occurs when ventilation exceeds perfusion due to deficient perfusion.
    • Pulmonary physiological shunt is caused by a zero or low V/Q ratio, resulting from insufficient ventilation and excess perfusion.
    • Deficient perfusion leads to physiological dead space, whereas excess perfusion contributes to pulmonary physiological shunt.
    • Both concepts are crucial in understanding the respiratory system, specifically in the context of ventilation-perfusion ratio (V/Q ratio).

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    Description

    Test your knowledge on physiological dead space and the condition when ventilation exceeds perfusion due to deficient perfusion. Explore the concept of ventilation-perfusion mismatch in this quiz.

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