Question

Ribs that are not joined in front to the chest bone are called?

Answer 1

Heya friend.

Ribs which are not jointed to the chest bone i.e
sternum are known as floating ribs.
Hope that this answer helps ya.

Answer 2

The bottom three ribs do not connect to the costal cartilage. They remain free, and are referred to as ‘floating ribs’. This allows humans to bend at the waist without the ribs interfering with the pelvis.