Assertion: diaphragm | /r/MadeOf | the heart
Facets:
value: from the abdominal cavity
type: LOCATION
Source sentences:
text: The diaphragm separates the thoracic cavity, containing the heart and lungs, from the abdominal cavity and performs an important function in respiration: as the diaphragm contracts, the volume of the thoracic cavity increases, creating a negative pressure there, which draws air into the lungs.