Which bone is also known as the collarbone?

The clavicle is known as the collarbone due to its distinctive shape that resembles a collar stretching across the front of the chest. It plays a crucial role in connecting the arm to the body and supports the scapula (shoulder blade), allowing for a wide range of motion. The clavicle also serves as a strut to keep the shoulder joint away from the body, which is vital for upper limb mobility.

In contrast, the scapula is often referred to as the shoulder blade, and the sternum is the breastbone located in the center of the chest, while the humerus is the long bone in the upper arm. Each of these bones has its own unique structure and function, but it is specifically the clavicle that is commonly associated with the term "collarbone."