Assertion: respiratory system | /r/CapableOf | use contraction of muscles
Facets:
value: in order to achieve pulmonary ventilation
type: PURPOSE
value: at the same time
type: TEMPORAL
Source sentences:
text: In order to achieve pulmonary ventilation, the respiratory system needs to use a negative pressure system and contraction of muscles at the same time.
text: The respiratory system uses both a negative pressure system and the contraction of muscles to achieve pulmonary ventilation.