Assertion: lung's structure | /r/Synonym | the alveoli
Facets:
Source sentences:
text: The bronchioles end up into the balloon-like structures known as the alveoli
text: The terminal bronchioles then give rise to a number of vascular bag-like structures called alveoli which have very thin walls.
text: Both of our Lungs have 300 million balloons like structures that are known with a name alveoli.
text: The bronchioles end up into the balloon-like structures known as the alveoli