What is the common name for the breast bone?

The common name for the breastbone is the sternum. The sternum is a flat bone located in the center of the chest and serves as a key component of the ribcage, providing protection for the heart and lungs. It also serves as an attachment point for the ribs and the clavicles (collarbones). This makes it essential for the structural integrity of the upper body and plays a vital role during the respiratory cycle as it helps in the movement of the ribcage.

Other options refer to different bones in the body. The clavicle, commonly known as the collarbone, connects the arm to the body and is not located in the center of the chest. The scapula, or shoulder blade, facilitates movements of the shoulder but is also not located in the area where the breastbone is found. The humorous is a humorous misspelling; the correct term is humerus, which refers to the bone in the upper arm. Thus, the identification of the sternum as the breastbone is accurate and reflects its anatomical significance.