Biomed 100 Practice Quiz
Chapter 17, Fall 2006
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Multiple Choice - One Correct Choice Per Question
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  1. Which one of the following is not a function of the paranasal sinuses?
    1. Reduce weight of skull.
    2. Remove warmth and moisture from inhaled air.
      3.
    3. Act as resonant chambers for voice production.

  2. The vocal folds (true vocal cords) are located in the...
    1. paranasal sinuses
    2. pharynx
    3. larynx
      4.
    4. trachea
    5. primary bronchi

  3. True or false? Most of the gas exchange between air and blood (oxygen absorption, etc.) occurs in the bronchiole portion of the respiratory system.
    1. True.
    2. False.
      3.

  4. During inspiration (inhalation), the pressure in the alveoli of the lungs...
    1. must be greater than atmospheric pressure.
    2. must be less than atmospheric pressure.
      3.
    3. must be equal to atmospheric pressure.

  5. Of the muscles listed below, which has/have the greatest role in respiration?
    1. deltoid
    2. trapezius
    3. intercostal
      4.
    4. pectoralis major
    5. latissimus dorsi

  6. True or false? The force responsible for normal expiration comes mainly from elastic recoil of tissues in the lung and thoracic wall.
    1. True.
      2.
    2. False.

  7. True or false? The respiratory center of the brainstem, which generates automatic breathing movements, is most sensitive to blood levels of oxygen.
    1. True.
    2. False.
      3.

  8. The layers of the "respiratory membranes" of the alveoli include the...
    1. thin cells of alveolar walls
    2. walls of pulmonary capillaries
    3. both of the above
      4.
    4. neither of the above

  9. True or false? The anatomy of the internal nose is oriented toward having the least surface area possible so as to avoid interference with air flow.
    1. True.
    2. False.
      3.

  10. The _?_ can be voluntarily "opened" or "closed" to control passage of air, etc., through the larynx.
    1. alveoli
    2. bronchi
    3. conchae
    4. glottis
      5.
    5. sinuses

  11. When the diaphragm contracts...
    1. it moves upward and compresses the thoracic (chest) cavity.
    2. it moves upward and expands the thoracic (chest) cavity.
    3. it moves downward and compresses the thoracic (chest) cavity.
    4. it moves downward and expands the thoracic (chest) cavity.
      5.