![]() It forms the back portion of the shoulder girdle. The scapula is a large, flat triangular bone with three processes called the acromion, spine and coracoid process. This articulation between the acromial end of the clavicle and the acromion of the scapula forms the roof of the shoulder. ![]() It forms the front portion of the shoulder girdle and is palpable along its entire length with a gentle S-shaped contour.The clavicle articulates at one end with the sternum (chest bone) and with the acromion of the scapula at the other. The clavicle is the only bony attachment between the trunk and the upper limb. A differing rib count between the genders is largely a medical myth.The bones of the shoulder consist of the humerus(the upper arm bone), the scapula (the shoulder blade), and the clavicle (the collar bone). While there are some cases of minor anatomical variation, men and women generally have the same amount of ribs. Three of those connect to non-costal cartilage, and two are deemed to be ‘floating,’ which means they only connect to the spine. ![]() Of all 24 ribs, the first seven pairs are often labeled as ‘true.’ These bones are connected to the costal cartilage, while the five other ‘false’ sets are not. The human rib cage is made up of 12 paired rib bones each are symmetrically paired on a right and left side. Although fixed into place, these ribs do allow for some outward movement, and this helps stabilize the chest during inhalation and exhalation. At the chest, many rib bones connect to the sternum via costal cartilage, segments of hyaline cartilage that allow the rib cage to expand during respiration. The rib cage is collectively made up of long, curved individual bones with joint-connections to the spinal vertebrae. The ribs partially enclose and protect the chest cavity, where many vital organs (including the heart and the lungs) are located. ![]()
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