Hemodynamics and Fick's Law Quiz
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Questions and Answers

What is the relationship between blood flow and the radius of an arteriole according to the information provided?

  • Exponentially proportional (correct)
  • No relationship
  • Inversely proportional
  • Directly proportional

    • Which factor controls the diameter of blood vessels, leading to vasoconstriction or vasodilation?

  • Blood pressure
  • Heart rate
  • Sympathetic tone (correct)
  • Parasympathetic tone

    • In Fick’s Law of diffusion, what does DC represent?

  • Density of gas
  • Diameter of vessel
  • Diffusion coefficient (correct)
  • Distance of diffusion

    • During low-intensity exercise, why does tidal volume increase according to the information provided?

    <p>To prevent acidosis by expiring CO2</p> Signup and view all the answers

    What does alveolar ventilation (VA) represent?

    <p>Volume of air that reaches the lungs per minute</p> Signup and view all the answers

    During high-intensity exercise, why does breathing frequency increase based on the information provided?

    <p>Because of an increase in heart rate and metabolites buildup</p> Signup and view all the answers

    What is the formula for alveolar ventilation (VA)?

    <p>VA = frequency x tidal volume - 0.15</p> Signup and view all the answers

    What does the radius of a blood vessel have a direct relationship with?

    <p>Blood flow</p> Signup and view all the answers

    Why is left ventricular pressure-volume loops considered a gold standard in monitoring cardiovascular disease?

    <p>Because LV increases blood volume during exercise</p> Signup and view all the answers

    What is the primary factor affecting resistance to flow through a blood vessel?

    <p>Vessel radius</p> Signup and view all the answers

    What happens to blood flow when there is vasoconstriction?

    <p>Blood flow decreases</p> Signup and view all the answers

    How does preload affect stroke volume?

    <p>Increased preload leads to increased stroke volume</p> Signup and view all the answers

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