Biomed 100 Practice Quiz
Chapter 16, Fall 2007
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Multiple Choice - One Correct Choice Per Question
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  1. The paranasal sinuses
    1. are located in certain skull bones and connected to the nasal cavity
    2. are normally full of mucus which they help produce
    3. reduce skull weight and act as chambers for voice resonance
    4. both a. and b.
    5. both a. and c.
      6.

  2. True or false? The vocal folds (cords) that are essential for normal speech are located in the pharynx.
    1. True.
    2. False.
      3.

  3. The _?_ and the _?_ contain large amounts of cartilage.
    1. paranasal sinuses and nasal cavity
    2. larynx and trachea
      3.
    3. bronchi and bronchioles
    4. bronchi and alveoli

  4. The pressure in the thoracic cavity
    1. is the same as atmospheric pressure during expiration
    2. is greater than atmospheric pressure during inspiration
    3. is less than atmospheric pressure during inspiration
      4.
    4. does not change throughout the respiratory cycle

  5. Elastic tissues in the lungs and chest wall provide the primary forces involved in
    1. inspiration
    2. active (forced) expiration
    3. quiet, passive (unforced) expiration
      4.
    4. all of the above
    5. none of the above

  6. The respiratory center in the brain that regulates breathing is stimulated most strongly by the amount of _?_ in body fluids.
    1. oxygen
    2. carbon dioxide
      3.


  7. Inhaling through the nose
    1. adds moisture and warmth to the inhaled air
      2.
    2. removes moisture and warmth from the inhaled air
    3. adds moisture to and removes warmth from the inhaled air
    4. removes moisture from and adds warmth to the inhaled air

  8. Gases in the alveoli may enter blood by passing through _?_ layer(s) of thin cells.
    1. zero
    2. one
    3. two
      4.
    4. three
    5. five

  9. Given the following key, what is the sequence of structures through which inhaled air passes?
    1 = alveoli; 2 = bronchi; 3 = larynx; 4 = pharynx; 5 = trachea
    1. 1-3-4-5-2
    2. 2-3-4-5-1
    3. 3-4-5-2-1
    4. 4-3-5-2-1
      5.
    5. 5-4-3-2-1

  10. In the respiratory tract, mucus and particles trapped in mucus are moved in the "right" direction mainly by
    1. a stroking motion of tiny "hairs" called cilia
      2.
    2. a stroking motion of the epiglottis
    3. peristalsis (smooth muscle contractions)
    4. vibrations of the vocal ligaments (cords)

  11. Which of the following actions are voluntary?
    1. opening and closing of the glottis
      2.
    2. constriction and dilation of the smaller air passages
    3. both of the above
    4. none of the above