The upper seven pairs of ribs articulate directly with the sternum and are called ____ ribs.
A) true
B) free
C) floating
D) false

Question

The upper seven pairs of ribs articulate directly with the sternum and are called ____ ribs.​
A) ​true
B) ​free
C) ​floating
D) ​false

Quizplus · Accepted Answer

The upper seven pairs of ribs articulate directly with the sternum and are called "true" ribs. This is a distinguishing characteristic of the true ribs as opposed to the "false" ribs, which articulate indirectly or not at all with the sternum, and the "floating" ribs, which do not articulate with the sternum at all.

The Upper Seven Pairs of Ribs Articulate Directly with the Sternum