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Major content provider: U.S. National Cancer Institute

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Respiratory System: Unit Review

 

Here is what we have learned from this unit:

  • The entire process of respiration includes ventilation, external respiration, transport of gases, internal respiration, and cellular respiration.
  • The three pressures responsible for pulmonary ventilation are atmospheric pressure, intraalveolar pressure, and intrapleural pressure.
  • A spirometer is used to measure respiratory volumes and capacities. These measurements provide useful information about the condition of the lungs.
  • The frontal, maxillary, ethmoidal, and sphenoidal sinuses are air filled cavities that open into the nasal cavity.
  • The pharynx, commonly called the throat, is a passageway that extends from the base of the skull to the level of the sixth cervical vertebra.
  • The larynx, commonly called the voice box, is the passageway for air between the pharynx above and the trachea below.
  • The trachea, commonly called the windpipe, is the main airway to the lungs.
  • The trachea divides into the right and left primary bronchi, which branch into smaller and smaller passageways until they terminate in tiny air sacs called alveoli.
  • The two lungs contain all the components of the bronchial tree beyond the primary bronchi.
  • The right lung is shorter, broader, and it is divided into three lobes.
  • The left lung is longer, narrower, and it is divided into two lobes.

 

David L. Heiserman, Editor

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Revised: June 06, 2015