Gas Exchange in the Human Body Quiz
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Questions and Answers

According to Fick’s law, the rate of gas transfer across the membrane is directly proportional to which of the following?

  • Moisture content of the membrane
  • Surface area of the membrane
  • Thickness of the membrane
  • Difference in partial pressure of gas on the two sides of the membrane and the membrane’s diffusing capacity (correct)
  • What enables the harvesting of energy from food molecules provided by the digestive system?

  • Breathing
  • Exchange of gases with body cells (correct)
  • Cellular respiration
  • Transport of gases by the circulatory system
  • What characterizes an efficient gas exchange surface according to the text?

  • Large surface area and a small distance for gases to diffuse across (correct)
  • Small surface area and a large distance for gases to diffuse across
  • Large surface area and a moist environment
  • Dry surface area and a large distance for gases to diffuse across
  • Where does gas exchange with the environment occur in animals?

    <p>Moist body surfaces</p> Signup and view all the answers

    What is the gas exchange as we breathe often called?

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

    What is the largest airway that communicates with the external environment in the respiratory system?

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

    What are the microscopic air sacs in the lungs called in mammals and reptiles?

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

    What determines the anatomy and physiology of the respiratory system in animals and plants?

    <p>Size of the organism, environment, and evolutionary history</p> Signup and view all the answers

    What is the term for the system of hollow tubes that connect the air sacs with the external environment?

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

    In birds, what are the microscopic air sacs in the lungs known as?

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

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