Which three bones make up the shoulder girdle?

• A. Clavicle, scapula, humerus
• B. Acromion, clavicle, scapula
• C. Acromion, scapula, humerus
• D. Acromion, humerus, clavicle

Answer: (A)

The shoulder girdle, also known as the pectoral girdle, is primarily composed of three key bones: the clavicle, scapula, and humerus.

The clavicle is a long bone that connects the arm to the body, facilitating movement and stability at the shoulder. It acts as a strut that maintains the position of the scapula, which is essential for the proper function of the arm.

The scapula, or shoulder blade, sits on the posterior side of the ribcage and serves as a crucial attachment point for various muscles that allow for shoulder movement and stability.

The humerus, while commonly associated with the upper arm, is the bone that articulates with the scapula to form the shoulder joint. It is important to note that while the humerus plays a significant role in the shoulder's structure, it is part of the upper limb rather than the girdle itself.

In summary, the correct answer emphasizes the clavicle and scapula as integral components of the shoulder girdle, with the humerus being closely connected in function rather than directly comprising the girdle itself. This anatomical understanding is essential in EMT practice for assessing and treating injuries related to the shoulder region.