Assertion: bronchus's wall | /r/HasAspect | four layers
Facets:
Source sentences:
text: The wall of the trachea can be divided into four layers: mucosa, submucosa, musculocartilaginous layer, and adventitia.
text: The wall of the trachea can be divided into four layers: mucosa, submucosa, musculocartilaginous layer, and adventitia.