Is clavicle a flat bone12/5/2023 ![]() The right and left pectoral girdles are not joined to each other, allowing each to operate independently. Both of these bones serve as important attachment sites for muscles that aid with movements of the shoulder and arm. Move your shoulder around and feel how the clavicle and scapula move together as a unit. ![]() By following along the clavicle, you can palpate out to the bony tip of the shoulder, and from there, you can move back across your posterior shoulder to follow the ridge of the scapula. This ridge extends out laterally, where it forms the bony tip of the shoulder and joins with the lateral end of the clavicle. The scapula is a flat, triangular-shaped bone with a prominent ridge running across its posterior surface. ![]() It is supported by the clavicle and articulates with the humerus (arm bone) to form the shoulder joint. The scapula (shoulder blade) lies on the posterior aspect of the shoulder. Figure 8.3 Pectoral Girdle The pectoral girdle consists of the clavicle and the scapula, which serve to attach the upper limb to the sternum of the axial skeleton. ![]()
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