Usually, there are 12 pairs of ribs in humans. The first seven pairs of ribs are known as true ribs, 8^(th), 9^(th) and 10^(th) pairs are called false ribs and last two pairs ($i.e.,$ 11^(th) and 12^(th) pairs) are known as floating ribs.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.