Biomed 100 Practice Quiz
Chapter 16, Spring 2008
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  1. Which statement is not true of the paranasal sinuses?
    1. They contain air and are lined by mucous membranes.
    2. They help reduce the weight of the skull.
    3. They serve as "resonating chambers" that assist in voice production.
    4. They normally are completely sealed so that air cannot flow into or out of them.

  2. Which statement is not true of the vocal ligaments ("vocal cords")?
    1. They are located in the larynx.
    2. They may be abducted (separated from each other) or adducted (brought together).
    3. They may be made looser (to produce lower pitches) or tighter (to produce higher pitches).
    4. Their position and tension is controlled by smooth (involuntary) muscle.
      5.

  3. Pieces of cartilage are the main factor that keeps the _?_ "open" (preventing collapse).
    1. paranasal sinuses
    2. pharynx
    3. trachea and larger bronchi
      4.
    4. smaller bronchi and bronchioles
    5. both C. and D.

  4. The right and left primary bronchi are most directly attached to the
    1. pharynx
    2. larynx
    3. trachea
      4.
    4. alveoli

  5. Of all parts of the respiratory tract, the thinnest epithelium (surface tissue) is found in the _?_.
    1. trachea
    2. bronchi
    3. bronchioles
    4. alveoli
      5.

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

  7. Of following muscles, the _?_ has the least direct involvement in respiration.
    1. diaphragm
    2. pectoralis major
      3.
    3. intercostal muscles
    4. abdominal wall muscles

  8. Elastic recoil ("shrinking") of lung tissues and the chest wall
    1. provides the force responsible for inspiration while a person is physically at rest
    2. provides the force responsible for active (forced) expiration
    3. provides the force responsible for passive (unforced) expiration
      4.
    4. is not involved in any aspect of respiration

  9. Which statement is true?
    1. Oxygen is the most abundant gas in the atmosphere.
    2. Most of the oxygen in blood is attached to hemoglobin.
      3.
    3. Both of the above are true.
    4. None of the above are true.

  10. The nasal conchae
    1. are located inside the paranasal sinuses
    2. are covered by a mucous membrane
      3.
    3. both of the above
    4. none of the above

  11. Breathing through the nose is advantageous because doing so helps remove _?_ from the inhaled air.
    1. particles including dust, microorganisms, etc.
      2.
    2. moisture
    3. both of the above
    4. none of the above

  12. Of all parts of the respiratory system, the greatest amount of smooth muscle and the greatest potential to actively constrict are in the
    1. larynx
    2. trachea
    3. large bronchi
    4. small bronchi and bronchioles
      5.
    5. alveoli

  13. When the diaphragm contracts, it moves _?_ and the size of the thoracic cavity _?_.
    1. upward / increases
    2. upward / decreases
    3. downward / increases
      4.
    4. downward / decreases