What anatomical factor defines a rib as a "true" rib?
A)Whether or not it is made of bone (versus cartilage)
B)Whether or not it articulates directly to the sternum
C)Whether it articulates to the sternum or the xiphoid process
D)All the ribs are true ribs

Question

Quizplus · Accepted Answer

Whether or not a rib articulates directly to the sternum defines it as a "true" rib. The other ribs do not articulate directly to the sternum. These other ribs articulate with the rib superior to it or remain free of articulation.

What Anatomical Factor Defines a Rib as a "True" Rib