Assertion: sternum | /r/HasProperty | flattened bone
Facets:
value: with a smooth surface
type: OTHER
Source sentences:
text: The sternum is a flattened bone with a smooth surface, which forms the middle portion of the anterior chest wall.
text: Commonly referred to as the breastbone, the sternum is a flattened T-shaped bone that is situated in the upper middle region in the anterior section of the chest.