Which bone is the shoulder blade?

Which bone is the shoulder blade?

• A. Scapula
• B. Clavicle
• C. Humerus
• D. Radius

Answer: (A)

The shoulder blade is the scapula. This flat, triangular bone sits on the back of the rib cage and forms part of the shoulder joint by meeting the upper arm bone (humerus) at the glenoid cavity, while also connecting to the clavicle at the acromion. Its location and connections enable the wide range of shoulder movement and provide attachment points for muscles that move the arm. The clavicle is the collarbone across the top of the chest, the humerus is the long bone of the upper arm, and the radius is one of the forearm bones, not the shoulder blade.

The shoulder blade is the scapula. This flat, triangular bone sits on the back of the rib cage and forms part of the shoulder joint by meeting the upper arm bone (humerus) at the glenoid cavity, while also connecting to the clavicle at the acromion. Its location and connections enable the wide range of shoulder movement and provide attachment points for muscles that move the arm. The clavicle is the collarbone across the top of the chest, the humerus is the long bone of the upper arm, and the radius is one of the forearm bones, not the shoulder blade.