air spaces

air spaces

the alveolar ducts, alveolar sacs, and alveoli of the respiratory tract.
References in classic literature ?
But at others, as the hollow sounding wind swept by us, it seemed to clear the air space around us so that we could see afar off.
TAV said air spaces of many European countries were currently closed, adding some states, including Germany, were getting prepared to open their air spaces to traffic soon.
Pointing to a recent statement by the General Directorate of State Airports Authority of Turkey (DHMI), TAV said there was no necessity to close down the Turkish air space at the moment.
But what's emerged is that these air spaces have certain properties and functions," said Witmer, Chang Professor of Paleontology in Ohio University's College of Osteopathic Medicine.
Witmer suggests that the air spaces helped lighten the load of the head, making it about 18 percent lighter than it would have been without all the air.
Overall, the amount of air space was much greater than the brain cavity.
The area of eligibility (AOE) encompasses all land area of the Republic of Korea, the contiguous water out to 12 nautical miles and all air spaces above the land and water areas.