Final answer:
The human clavicle braces the scapula through its articulation with the acromion of the scapula distally and the manubrium of the sternum proximally, forming two important joints: the acromioclavicular joint and the sternoclavicular joint.
Step-by-step explanation:
The human clavicle, also known as the collarbone, plays an important role in the structure of the shoulder. The clavicle is able to brace the scapula through its articulation with the acromion of the scapula distally and the manubrium of the sternum proximally.
The sternal end of the clavicle, also referred to as the medial end, forms the sternoclavicular joint by articulating with the manubrium of the sternum. This joint acts as the only bony attachment between the pectoral girdle and the axial skeleton, enabling shoulder mobility.
On the other hand, the lateral end or acromial end of the clavicle articulates with the acromion of the scapula, which forms part of the acromioclavicular joint. This connection supports the scapula and serves as a site for muscle attachment, thereby transmitting forces from the upper limb to the axial skeleton.