HAP: The Respiratory System Part 2


  1. State and then relate Boyle's law to the events of inspiration and expiration.


 Use the word bank and match the following facts about pressure with the correct term: 

a. atmospheric pressure              b. intrapulmonary pressure                  c. intrapleural pressure  

  1. Baring pneumothorax, this pressure is always lower than atmospheric pressure (that is, is a negative pressure) ______

  2. Pressure of air outside the body ______

  3. As it decreases, air flows into the passageways of the lungs ______

  4. As it increases over atmospheric pressure, air flows out of the lungs ______

  5. If this pressure becomes equal to the atmospheric pressure, the lungs collapse ______

  6. Rises well over atmospheric pressure during a forceful cough ______

  7. Also known as the intra-alveolar pressure ______


Match the gas law to the description: 

a. Boyle's law                            b. Dalton's law                                    c. Henry's law

  1. Describes the fact that each gas in a mixture exerts pressure according to its percentage in the mixture ______

  2. States that P1V1 = P2V2 when temperature is constant ______

  3. States that when gases are in contact with liquids each gas will dissolve in proportion to the partial pressure and solubility to the liquid ______



a. dead space volume    b. expiratory reserve volume (ERV)   c. inspiratory reserve volume (IRV)    d.  Residual volume (RV)             e. Tidal Volume (TV)           f.  Total lung capacity (TLC) 

 g.  Vital Capacity (VC)


  1. Respiratory volume inhaled or exhaled during normal breathing ______

  2. Air in respiratory passages that does not contribute to gas exchange ______

  3. Total amount of exchangeable air ______

  4. Gas volume that allows gas exchange to go on continuously ______

  5. Amount of air that can still be exhaled (forcibly) after a normal exhalation ______

  6. Sum of all lung volumes ______



a.  external respiration                        b. expiration                             c. inspiration  

d. internal respiration                         e. pulmonary ventilation (breathing)


  1. Period of breathing when air enters the lungs ______

  2. Period of breathing when air leaves the lungs ______

  3. Alternate flushing of air into and out of the lungs ______

  4. Exchange of gases between alveolar air and pulmonary capillary blood ______

  5. Exchange of gases between blood and tissue cells ______


  1. What stops the lungs from over inflating?



  1. Where is the breathing rhythm center?