Assertion: trachea | /r/HasProperty | held open
Facets:
value: by c -shaped carti- laginous rings
type: OTHER
Source sentences:
text: It is held open because it consists of a stack of 15 to 20 C-shaped rings of cartilage with a small amount of soft tissue between them (Fig 1).
text: The trachea lies ventral to the esophagus and is held open by C -shaped carti- laginous rings.