Assertion: lung's alveoli | /r/HasProperty | responsible for actual gas exchange
Facets:
Source sentences:
text: Most of the organs of the respiratory system help to distribute air, but only the tiny, grape-like alveoli and the alveolar ducts are responsible for actual gas exchange.
text: Most of the organs of the respiratory system help to distribute air, but only the tiny, grape-like alveoli and the alveolar ducts are responsible for actual gas exchange.