Assertion: vertebra's set | /r/Synonym | true ribs
Facets:
Source sentences:
text: The first seven sets of ribs, known as "true ribs", are attached to the sternum by the costal cartilages.
text: The following five sets are known as "false ribs", three of these sharing a common cartilaginous connection to the sternum, while the last two (eleventh and twelfth ribs) are termed floating ribs.