Assertion: alveolus | /r/HasProperty | approximately 200 mm
Facets:
value: in diameter
type: OTHER
value: with elastic walls
type: OTHER
Source sentences:
text: An alveolus is approximately 200 mm in diameter with elastic walls that allow the alveolus to stretch during air intake, which greatly increases the surface area available for gas exchange.
text: An alveolus is approximately 200 mm in diameter with elastic walls that allow the alveolus to stretch during air intake, which greatly increases the surface area available for gas exchange.