Recent

  • Show all results for ""

🎧 New: AI-Generated Podcasts Turn your study notes into engaging audio conversations. Learn more

2.2 Alveolar Ventilation
36 Questions
3 Views

2.2 Alveolar Ventilation

Created by
@WorkableCreativity2568

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is a main purpose of ventilation?

  • Reduce anatomic dead space
  • Exchange oxygen and carbon dioxide (correct)
  • Renewal of alveolar air
  • Maintain lung volumes and capacities

    • Which equation is used to measure physiologic dead space?

  • Alveolar air equation
  • Dalton's law equation
  • Closing volume equation
  • Bohr equation (correct)

    • How does alveolar ventilation affect alveolar gas tensions?

  • It increases oxygen tension and decreases carbon dioxide tension (correct)
  • It has no impact on gas tensions
  • It decreases oxygen tension and increases carbon dioxide tension
  • It decreases both oxygen and carbon dioxide tensions

    • Which lung capacity is determined by the strength of contraction of the inspiratory muscles?

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

    What effect does a decrease in Functional Residual Capacity (FRC) have on Expiratory Reserve Volume (ERV)?

    <p>Decreases ERV</p> Signup and view all the answers

    Which parameter greatly increases in obstructive lung disease?

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

    Which method cannot be used to measure Residual Volume (RV)?

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

    What is used to measure lung volumes when the subject must be conscious and cooperative?

    <p>Water-seal spirometer</p> Signup and view all the answers

    What causes airway closure to begin at the Closing Volume?

    <p>Decreased traction on small airways</p> Signup and view all the answers

    During the 2nd breath, where does most of the oxygen enter initially?

    <p>Upper alveoli</p> Signup and view all the answers

    What does tidal volume refer to?

    <p>The amount of air that normally moves into (or out of) the lungs with each respiration</p> Signup and view all the answers

    What is a consequence of aging on lung volumes and capacities?

    <p>Increased chest wall inward recoil</p> Signup and view all the answers

    Which condition could be a reasonable explanation for a patient's significantly decreased functional residual capacity?

    <p>All of the above</p> Signup and view all the answers

    Which phase during expired gas measurement indicates the beginning of dependent airway closure?

    <p>Phase IV</p> Signup and view all the answers

    If a seated person inspires from residual volume, where would most of the inhaled gas end up after the dead space?

    <p>In alveoli in upper portions of the lung</p> Signup and view all the answers

    How do lung volumes change from standing to supine position?

    <p>RV and TLC slightly decrease or do not change at all</p> Signup and view all the answers

    What is a major characteristic of a restrictive lung disease?

    <p>Reduced compliance and compressed lung volumes</p> Signup and view all the answers

    What is the function of a Spirometer?

    <p>Measure lung volumes the subject can exchange with it</p> Signup and view all the answers

    What happens to FRC during obstructive lung disease?

    <p>Greatly increased</p> Signup and view all the answers

    How does an increase in physiologic dead space typically occur in a healthy individual?

    <p>Due to an increase in alveolar dead space</p> Signup and view all the answers

    What is the main function of functional residual capacity (FRC) in the lungs?

    <p>To resist sudden changes in alveolar air composition</p> Signup and view all the answers

    How does alveolar dead space differ from physiologic dead space?

    <p>Alveolar dead space is ventilation reaching alveoli that are now perfused</p> Signup and view all the answers

    What happens to the partial pressure of CO2 in blood if dead space increases if there is no compensation?

    <p>It increases</p> Signup and view all the answers

    In which phase of respiration do the last 150 ml of air in the anatomic dead space remain not fresh?

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

    Vital Capacity (VC) decreases in obstructive lung disease.

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

    Anatomic dead space is part of physiologic dead space.

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

    The Bohr equation is used to measure alveolar ventilation.

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

    Alveolar ventilation affects alveolar gas tensions.

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

    Functional residual capacity (FRC) decreases when transitioning from standing to supine position.

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

    Regional differences in alveolar ventilation occur at Functional Residual Capacity (FRC) and Residual Volume (RV).

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

    Closing Volume is the volume of gas remaining in the lungs at the end of a normal tidal expiration.

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

    Alveolar ventilation mainly impacts regional distribution of alveolar oxygen and nitrogen.

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

    Dalton's law explains the composition of respiratory gases in the alveoli.

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

    If a patient's functional residual capacity is significantly less than expected, which of the following positions is least likely to have caused this reduction?

    <p>Standing position</p> Signup and view all the answers

    What would be an expected outcome if a seated person inspires from residual volume and most of the inhaled gas remains in the anatomic dead space?

    <p>Decreased alveolar ventilation</p> Signup and view all the answers

    What is most likely to contribute to a paradoxical decrease in lung function test results?

    <p>An increase in residual volume</p> Signup and view all the answers

    More Quizzes Like This

    Respiratory System Anatomy and Function Quiz
    10 questions

    Respiratory System Anatomy and Function Quiz

    ReasonedWombat avatar
    ReasonedWombat
    Lung Volumes and Capacities Physiology Quiz
    17 questions

    Lung Volumes and Capacities Physiology Quiz

    RightfulHarpsichord avatar
    RightfulHarpsichord
    Lung Volumes and Lung Capacities Quiz
    10 questions

    Lung Capacity Quiz: Test Your Knowledge of Lung Volumes and Capacities

    StateOfTheArtExtraterrestrial avatar
    StateOfTheArtExtraterrestrial
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser