Respiratory System and Lung Volumes Quiz
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Respiratory System and Lung Volumes Quiz

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@EncouragingJasper7070

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Questions and Answers

What is the formula for Tidal Volume (VT or TV)?

  • VT = 0.5L + 0.15L
  • VT = 0.15L
  • VT = 0.5L - 0.15L
  • VT = 0.5L (correct)

    • Which of the following is a static lung volume?

  • Expiratory Reserve Volume (ERV)
  • Air in alveoli with each breath
  • Inspiratory Reserve Volume (IRV) (correct)
  • Air in (anatomical) Dead Space (VD)

    • What is the sum of two or more lung volumes known as?

  • Total Lung Capacity (TLC) (correct)
  • Vital Capacity (VC)
  • Functional Residual Capacity (FRC)
  • Inspiratory Capacity (IC)

    • Which of the following lung volumes is determined by the balance between the lung's elastic properties and the properties of the muscles of the chest wall?

    <p>Residual Volume (RV)</p> Signup and view all the answers

    Which lung volume represents the volume of air inhaled and exhaled with each normal breath during quiet breathing?

    <p>Tidal Volume (VT or TV)</p> Signup and view all the answers

    What is the volume of air remaining in the lungs after a maximal exhalation?

    <p>Residual Volume (RV)</p> Signup and view all the answers

    Which of the following represents the additional air that can be inhaled after a normal inhalation?

    <p>Inspiratory Reserve Volume (IRV)</p> Signup and view all the answers

    In the context of gas diffusion, which of the following is true?

    <p>The net diffusion rate of a gas is inversely proportional to the thickness of the membrane.</p> Signup and view all the answers

    Which of the following can affect the diffusion of respiratory gases?

    <p>Alveolar consolidation (e.g., pneumonia)</p> Signup and view all the answers

    In O2 transport from lungs to tissues, what is the normal percentage of saturation of Hb with O2?

    <p>98%</p> Signup and view all the answers

    What is the primary function of central chemoreceptors in the control of breathing?

    <p>Respond to changes in CO2, hydrogen ion, and partial pressure of O2</p> Signup and view all the answers

    What is the form in which CO2 primarily travels in RBCs during CO2 transport from tissues to lungs?

    <p>As bicarbonate ions</p> Signup and view all the answers

    Which of the following is a factor that can alter breathing pattern?

    <p>Proprioceptors in joints and muscles</p> Signup and view all the answers

    What is the term used for the plasma concentration of O2 in arterial blood?

    <p>Partial pressure of O2 in arterial blood (PaO2)</p> Signup and view all the answers

    Which of the following is part of the blood barrier in the diffusion of respiratory gases?

    <p>RBC membrane</p> Signup and view all the answers

    What is the driving pressure for oxygen as it travels from alveoli to arterial blood?

    <p>100 mmHg</p> Signup and view all the answers

    What happens at the end of expiration in the respiratory system?

    <p>Respiratory muscles relax, causing an abrupt increase in pleural pressure</p> Signup and view all the answers

    What influences alveolar ventilation in the respiratory system?

    <p>Elastic recoil of lungs and chest wall, lung compliance, airway and mechanical resistance</p> Signup and view all the answers

    What is responsible for turbulent airflow in the upper airway?

    <p>Airway resistance in the trachea</p> Signup and view all the answers

    Where does respiratory gas exchange take place?

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

    What does pulmonary circulation do in the respiratory system?

    <p>Delivers deoxygenated blood to the lungs and returns oxygenated blood to the heart</p> Signup and view all the answers

    What does bronchial circulation do in the respiratory system?

    <p>Delivers oxygenated blood supply to the bronchi and connective tissue of the lung, but does not participate in gas exchange</p> Signup and view all the answers

    What affects alveolar ventilation by impacting the resistance of airflow during inhalation and exhalation?

    <p>Mechanical resistance</p> Signup and view all the answers

    What is the volume of air that can be inhaled after a normal inspiration?

    <p>3 L</p> Signup and view all the answers

    What is the volume of air remaining in the lungs after a maximal exhalation?

    <p>1.5 L</p> Signup and view all the answers

    What is the maximal volume of air that can be expelled from the lungs after a maximal inspiration?

    <p>4.5 L</p> Signup and view all the answers

    What is the volume of air in the lungs at the end of normal expiration?

    <p>2.5 L</p> Signup and view all the answers

    What is the amount of ventilation per minute at rest?

    <p>5-10 L/min</p> Signup and view all the answers

    What is the process in which air is moved in and out of the lungs?

    <p>Pulmonary ventilation</p> Signup and view all the answers

    What is the amount of fresh air available for gas exchange?

    <p>Alveolar ventilation</p> Signup and view all the answers

    Study Notes

    Respiratory System and Lung Volumes

    • Reserve volumes refer to the maximal volume of air that can be moved above or below a normal tidal volume.
    • Inspiratory Reserve Volume (IRV) is the volume of air that can be inhaled after a normal inspiration, approximately 3 L.
    • Expiratory Reserve Volume (ERV) is the maximal volume of air that can be exhaled from the resting expiratory level, around 1 L.
    • With exercise, both reserve volumes decrease as tidal volume increases.
    • Residual Volume (RV) is the volume of air remaining in the lungs after a maximal exhalation, approximately 1.5 L.
    • Inspiratory Capacity (IC) is the maximal volume of air that can be inspired from the resting end-expiration level, approximately 3.5 L.
    • Vital Capacity (VC) is the maximal volume of air that can be expelled from the lungs after a maximal inspiration, approximately 4.5 L.
    • Functional Residual Capacity (FRC) is the volume of air in the lungs at the end of normal expiration, around 2.5 L.
    • Total Lung Capacity (TLC) is the amount of air in the respiratory system after a maximal inspiration, approximately 6 L.
    • Pulmonary ventilation is the process in which air is moved in and out of the lungs.
    • Minute Ventilation is the amount of ventilation per minute, with normal values at 5-10 L/min at rest.
    • Alveolar Ventilation is the amount of fresh air available for gas exchange, with hyperventilation and hypoventilation affecting carbon dioxide levels.

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    Related Documents

    23 PT 731 Respiratory Physiology (Part 1) (1).pdf

    Description

    Test your knowledge of the respiratory system and lung volumes with this quiz. Explore concepts such as reserve volumes, vital capacity, total lung capacity, and various ventilation parameters. Master the essential terms and functions related to breathing and lung function.

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