Respiration Quiz

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1. What is pulmonary ventilation?

  • all of the above
  • the pressure exerted by the gases that make up the air that surrounds the earth
  • air moves into lungs when pressure inside lungs is less than atmospheric pressure, air moves out of lungs when pressure inside lungs is greater than atmospheric pressure
  • change in the pressure gradient
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2. What three regions is the pharynx divided into?

  • Bronchioles, alveolar ducts and alveoli.
  • Trachea, nasal cavity and pharynx.
  • Nasopharynx, oropharynx, and laryngophrarynx.
  • Larynx, oropharynx and nasopharynx.

3. Histamine will..........bronchioles-->........ resistance--> .......airflow.

  • constrict, increase, decrease
  • None of these are correct.
  • dilate, decrease, increase
  • constrict, increase, decrease

4. What is atmospheric pressure?

  • Active process that requires muscle action where thorax volume increases and lungs expand
  • None of the above.
  • The pressure exerted by the gases that make up the air that surrounds the earth
  • Negative intrapleural pressure acts as a suction

5. What is the definition of residual volume?

  • The amount of air left in the lungs following a maximal exhalation.
  • The amount of extra air exhaled during a forceful breath out.
  • This is the vital lung capacity plus the residual volume and is the total amount of air lungs can hold.
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