Question

Number of pairs of non-floating ribs in human rib cage

• A. First seven pairs
• B. First ten pairs
• C. First five pairs
• D. All twelve pairs

Answer 1

The correct option is A

First seven pairs

First 7 pairs of ribs are attached anteriorly to the sternum, next 3 attached to a cartilage called costochondral cartilage and the last 2 pairs do not have any anterior attachment and hence called floating ribs.