FACTOID # 177: 61.5% of Swedes work more than 40 hours per week, but just across the border in Norway only 15.8% of people work this long.
 
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Encyclopedia > Alveolar duct

Alveolar ducts are the tiny end tubules of the branching airways that fill the lungs. Each lung holds approximately 1.5 to 2 million of them. The tubules divide into alveolar sacs at the distal end. The lungs flank the heart and great vessels in the chest cavity. ... In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ...



Prior to the alveolar ducts we have the terminal bronchioles.


  Results from FactBites:
 
XI. Splanchnology. 1e. The Lungs. Gray, Henry. 1918. Anatomy of the Human Body. (2952 words)
The primary lobule consists of an alveolar duct, the air spaces connected with it and their bloodvessels, lymphatics and nerves.
Each alveolar duct is connected with a variable number of irregularly spherical spaces, which also possess alveoli, the atria.
With each atrium a variable number (2–5) of alveolar sacs are connected which bear on all parts of their circumference alveoli or air sacs.
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