Mechanics of Respiration Introduction
12 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

According to Boyle's law, what happens to the pressure within the lungs as the volume increases during inspiration?

  • The pressure increases to facilitate inspiration.
  • The pressure remains constant.
  • The pressure decreases to facilitate inspiration. (correct)
  • The pressure first increases and then decreases.

    • What is the typical range of the intrathoracic (intrapleural) pressure during the respiratory cycle?

  • -10 to -12.5 cmH2O
  • -5 to -7.5 cmH2O (correct)
  • -2.5 to -5 cmH2O
  • -7.5 to -10 cmH2O

    • What is the relationship between alveolar pressure and pleural pressure during respiration?

  • Alveolar pressure is always greater than pleural pressure.
  • Alveolar pressure is greater than pleural pressure during inspiration and less during expiration. (correct)
  • Alveolar pressure is equal to pleural pressure.
  • Alveolar pressure is always less than pleural pressure.

    • What is the primary purpose of the negative intrathoracic (intrapleural) pressure?

    <p>To keep the lungs inflated against the chest wall.</p> Signup and view all the answers

    Which of the following correctly describes the relationship between respiratory rate and normal breathing?

    <p>Normal respiratory rate is about 12 breaths per minute.</p> Signup and view all the answers

    Which of the following processes is involved in the exchange of gases between the body and the atmosphere during respiration?

    <p>Both inspiration (inhalation) and expiration (exhalation).</p> Signup and view all the answers

    What is the approximate percentage of total body energy utilized during the respiratory process?

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

    Which of the following muscles is NOT involved in forced inspiration?

    <p>Internal intercostal</p> Signup and view all the answers

    What is the normal value for total compliance of the lungs and chest wall?

    <p>0.1 L/cmH2O</p> Signup and view all the answers

    Which of the following is NOT a characteristic of compliance?

    <p>Is directly proportional to the elastic recoil of the lung</p> Signup and view all the answers

    What is the typical cause of diaphragm paralysis?

    <p>Lesion or injury to the phrenic nerve</p> Signup and view all the answers

    What is the relationship between the compliance of the lungs and the chest wall?

    <p>They work paradoxically, so total compliance is less than the sum of the two</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser