Cardiac Output and Blood Flow Regulation Overview
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Questions and Answers

What is the major inspiratory muscle of respiration?

  • Diaphragm (correct)
  • Rectus abdominis
  • Pectoralis minor
  • Intercostal muscles
  • Which condition is NOT mentioned as a factor that can change the structure and function of the pulmonary system?

  • Heart failure (correct)
  • COPD
  • Cystic fibrosis
  • Asthma
  • Ineffective gas exchange in the lungs is most commonly due to problems with:

  • Perfusion
  • Diffusion
  • Ventilation (correct)
  • Respiration
  • Which nerve innervates the diaphragm, the major inspiratory muscle of respiration?

    <p>Phrenic nerve</p> Signup and view all the answers

    Which condition can lead to decreased oxygen-carrying capacity of the blood?

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

    What factor can increase cardiac output?

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

    Which factor can lead to hypoventilation?

    <p>Airway obstruction</p> Signup and view all the answers

    What is a common factor that can affect oxygenation physiologically?

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

    Which condition can lead to inadequate tissue oxygenation at the cellular level?

    <p>Decreased diffusion of oxygen from the alveoli to the blood</p> Signup and view all the answers

    What is the main cause of myocardial infarction?

    <p>Plaque buildup in cardiac arteries</p> Signup and view all the answers

    What respiratory effect does atelectasis (collapse of alveoli) have on the body?

    <p>Causes hypoventilation</p> Signup and view all the answers

    In patients with COPD, why can excessive amounts of oxygen cause hypoventilation?

    <p>Decreased hypoxic drive to breathe (PaO2)</p> Signup and view all the answers

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