Question

the sternal angle indicates the location of the pair of ribs. there are pairs of true ribs. the manubrium, body, and xiphoid process form a bone called the . the manubrium articulates with the on its superior border. costal cartilages are composed of this connective tissue. the last two pairs of ribs that lack a cartilaginous attachment to the sternum are referred to as the .

Answer 1

The ribs are attached to the sternum via costal cartilages, except for rib pairs 11 and 12 which are free-floating ribs.

Step-by-step explanation:

The sternum, or breastbone, is a long, flat bone located at the anterior of the chest. It is formed from three bones that fuse in the adult. The ribs are 12 pairs of long, curved bones that attach to the thoracic vertebrae and curve toward the front of the body, forming the ribcage. Costal cartilages connect the anterior ends of the ribs to the sternum, with the exception of rib pairs 11 and 12, which are free-floating ribs.