Assertion: trachea | /r/CapableOf | remain flexible
Facets:
value: whilst maintaining the rigidity
type: MANNER
value: in the longitudinal direction
type: MANNER
Source sentences:
text: The rings allow the trachea to keep its strength but to also remain flexible so the dog can move well.
text: The trachea must maintain flexibility in the longitudinal direction to allow for free movement of the head, whilst maintaining the rigidity necessary to prevent collapse of the trachea during breathing.