The Full Wiki

More info on Zones of the lung

Zones of the lung: Wikis

Advertisements

Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! See more info or our list of citable articles.

Encyclopedia

From Wikipedia, the free encyclopedia

The zones of the lung proposed by West in 1964,[1] divide the lung into three vertical regions, based upon the relationship between the pressure in the alveoli (PA), in the arteries (Pa), and the veins (Pv):

  • #1: alveolar > arterial > venous
  • #2: arterial > alveolar > venous
  • #3: arterial > venous > alveolar

The ventilation/perfusion ratio is higher in zone #1 (the apex of lung when a person is standing) than it is in zone #3 (the base of lung.)

References

  1. ^ West J, Dollery C, Naimark A. "Distribution of blood flow in isolated lung; relation to vascular and alveolar pressures". J Appl Physiol 19: 713–24. PMID 14195584.  

External links

Advertisements

Advertisements






Got something to say? Make a comment.
Your name
Your email address
Message