Pulmonary Physiology Quiz
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Questions and Answers

What is the primary component of the atmosphere by volume?

  • Nitrogen (correct)
  • Oxygen
  • Argon
  • Carbon Dioxide
  • What is the total atmospheric pressure at sea level?

  • 760 mm Hg (correct)
  • 500 mm Hg
  • 593 mm Hg
  • 1000 mm Hg
  • According to Dalton's Law, how is the total pressure of gases calculated?

  • It is the sum of the partial pressures of each individual gas. (correct)
  • It is the average of all partial pressures.
  • It is the sum of only the major gases present in the atmosphere.
  • It is the product of the temperature and the number of gas types.
  • What is the estimated partial pressure of oxygen (O2) in human blood?

    <p>100 mm Hg</p> Signup and view all the answers

    What percentage of blood volume is typically associated with the pulmonary system?

    <p>10%</p> Signup and view all the answers

    In the pulmonary circuit, what characterizes the pressure dynamics?

    <p>High-flow, low-pressure system</p> Signup and view all the answers

    Which gas is typically transported in the highest concentration in arterial blood?

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

    What is the pressure of systemic circulation stated in the content?

    <p>25/8 mm Hg</p> Signup and view all the answers

    Which of the following effects does saliva have in the digestive tract?

    <p>Contains lysozymes that kill bacteria</p> Signup and view all the answers

    What is the primary action of cilia in the respiratory tract?

    <p>Waving away foreign particles</p> Signup and view all the answers

    Which step occurs first in the tissue repair cascade following blood vessel damage?

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

    What protects the respiratory system from pathogens?

    <p>Ciliated epithelial cells</p> Signup and view all the answers

    In terms of gas exchange, which factor does NOT affect the rate of diffusion according to Fick's Law?

    <p>Fluid viscosity</p> Signup and view all the answers

    What role does prostacyclin play in platelet function?

    <p>Inhibits platelet binding</p> Signup and view all the answers

    The urinary tract's defense against infection includes:

    <p>Both B and C</p> Signup and view all the answers

    Which element is crucial for converting fibrinogen into fibrin in the clotting process?

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

    What is the primary function of the nonpathogenic normal flora in the digestive tract?

    <p>Competing against harmful microbes</p> Signup and view all the answers

    What event follows the adherence of platelets to collagen?

    <p>Release of platelet factors</p> Signup and view all the answers

    Which of the following best describes the role of mucus in the respiratory system?

    <p>Trapping microbes and particles</p> Signup and view all the answers

    Fibrinolysis in wound healing is primarily responsible for:

    <p>Breaking down the blood clot</p> Signup and view all the answers

    In relation to tissue repair, what does platelet aggregation achieve?

    <p>Blocks excessive blood loss</p> Signup and view all the answers

    Which condition allows for higher membrane permeability during gas exchange?

    <p>Increased lipid solubility</p> Signup and view all the answers

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