Assertion: respiratory tract | /r/CapableOf | help seal the opening
Facets:
value: at the top
type: LOCATION
Source sentences:
text: For example, there’s this thing you could do called a valsalva maneuver, like when you’re straining to poop, if you close the airway from the top, it helps seal the opening at the top, so it increases the intraabdominal and intrathoracic pressure on the inside.