Assertion: vocal cord | /r/CapableOf | act as valve
Facets:
value: in the upper airway
type: LOCATION
value: normally
type: DEGREE
Source sentences:
text: Normally, the two vocal cords act as a valve in the upper airway, opening for breathing and closinWhen one vocal cord stops moving (unilateral vocal cord paralysis), this valve can leak, resulting in a weak and breathy voice.
text: The vocal cords act like a valve regulating airflow within the voice box as they open for breathing and temporarily close for producing sound.