Respiratory System Pressure Dynamics Quiz
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Questions and Answers

What is the function of alveoli?

  • Help regulate the pH of the blood
  • Exchange of gases (correct)
  • Stimulate and regulate respiration
  • Assist in heat regulation

    • Which term refers to the normal respiration?

  • Apnoea
  • Dyspnoea
  • Hyperpnoea
  • Eupnoea (correct)

    • In heart failure, which type of dyspnoea occurs only at night?

  • Paroxysmal nocturnal dyspnea (correct)
  • Dyspnoea on exertion
  • Orthopnea
  • Dyspnoea at rest

    • Which muscle is the main muscle involved in inspiration?

    <p>Diaphragm (C)</p> Signup and view all the answers

    What occurs during expiration?

    <p>Decrease in thoracic volume (D)</p> Signup and view all the answers

    Which part of the respiratory system comprises the lower respiratory passage?

    <p>Non-conducting part (B)</p> Signup and view all the answers

    What is the aim of cellular respiration?

    <p>Extraction of energy from food (A)</p> Signup and view all the answers

    Which type of respiration involves the exchange of gases between blood and tissues?

    <p>Internal respiration (B)</p> Signup and view all the answers

    What is the normal respiratory rate in adults during Eupnoea?

    <p>16/min (D)</p> Signup and view all the answers

    Which part of the respiratory system does not undergo gas exchange?

    <p>Conducting part (D)</p> Signup and view all the answers

    What is the main function of the conducting part of the respiratory system?

    <p>Conduction of air (A)</p> Signup and view all the answers

    How many phases are present in normal respiration under hyperventilation conditions?

    <p>2 phases (B)</p> Signup and view all the answers

    What is the pressure inside alveoli at the beginning of inspiration?

    <p>0 mmHg (C)</p> Signup and view all the answers

    What is the value of intra abdominal pressure at the end of normal inspiration and beginning of expiration?

    <p>+1 mmHg (A)</p> Signup and view all the answers

    What is the main cause of hemothorax?

    <p>Malignant tumor (C)</p> Signup and view all the answers

    What does pneumothorax refer to?

    <p>Presence of air in the pleural cavity (C)</p> Signup and view all the answers

    What is the value of intraalveolar pressure at the end of normal expiration?

    <p>-1 mmHg (D)</p> Signup and view all the answers

    In relation to intra pleural space, what does hydropneumothorax indicate?

    <p>Presence of air and fluid in the pleural cavity (A)</p> Signup and view all the answers

    During expiration, what happens to the thoracic cage volume?

    <p>Decreases (A)</p> Signup and view all the answers

    Which type of alveolar cell is responsible for gas exchange due to its thin nature?

    <p>Type I (C)</p> Signup and view all the answers

    What is the function of Type II alveolar cells?

    <p>Surfactant secretion (C)</p> Signup and view all the answers

    Which apparatus is used to measure the volumes and capacities in static pulmonary function tests?

    <p>Spirometer (B)</p> Signup and view all the answers

    What is the main function of a pulmonary alveolar macrophage (PAM)?

    <p>Phagocytosis (A)</p> Signup and view all the answers

    Which pressure increases during inspiration?

    <p>Intraleural pressure (C)</p> Signup and view all the answers

    What is the Minute Respiratory Volume (MRV) in normal respiration?

    <p>6-8 L/min (D)</p> Signup and view all the answers

    What is the Breathing Reserve (BR) formula derived from the text?

    <p>MBC - MRV (B)</p> Signup and view all the answers

    What does a Dyspnoeic Index (DI) of less than 70% indicate?

    <p>Severe dyspnoea (B)</p> Signup and view all the answers

    What does Timed Vital Capacity (TVC) measure?

    <p>% amount of air expired in different seconds of expiration (B)</p> Signup and view all the answers

    What is Maximal Breathing Capacity (MBC) in males according to the text?

    <p>120 L/min (A)</p> Signup and view all the answers

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