Fill in the blank spaces: (e) __________ and __________ pairs of ribs are called floating ribs.
The human rib cage has 12 pairs of ribs. The last two 11th and 12th pairs of ribs are not connected ventrally and therefore are called as floating ribs. These are a part of the skeletal system of the body. Final answer 11th and 12th pairs of ribs are called floating ribs.
