Final answer:
The clavicle is not part of the rib cage, while the sternum, ribs, and scapula are all part of it in the human body.
Step-by-step explanation:
The sternum, ribs, and scapula are all part of the rib cage, while the clavicle is not. The rib cage consists of the 12 pairs of ribs, the sternum, and the thoracic vertebrae. The ribs are attached to the sternum by cartilage, allowing the rib cage to expand and contract during breathing. The clavicle, also known as the collarbone, is not part of the rib cage and serves as the connection between the sternum and scapula at the shoulder joint.