Question

what is the difference between a true rib and floatimg rib ?

Answer 1

true rib means rib joining the sternum
floating rib means ribs which do not join sternum.ex:rib no.11,12

Answer 2

Answer:

(i) True ribs:  

• The first seven pairs of ribs are called true ribs.
• They are dorsally attached to the thoracic vertebrae and are ventrally connected to the sternum with help of the hyaline cartilage.

(ii) Floating ribs:  

• The 11th and 12th pair of ribs are called floating ribs because one end of the rib is attached to the vertebral column and the other end is free.
• The floating ribs play an important role to protect the kidneys.