There are 12 pairs of ribs subdivided according to their anterior articulation
a. True ribs: (R1-7) articulate with sternum
b. False ribs: (R8-12) R8-10 articulate with next highest rib
c. Floating ribs: (R11-12) no anterior articulation
Examine these subdivisions of ribs in the image below and then go on to next page.