Which term refers to the central chest bone?

Which term refers to the central chest bone?

• A. Sternum
• B. Clavicle
• C. Ribs
• D. Humerus

Answer: (A)

The central chest bone is the sternum, or breastbone. It sits in the middle of the chest and forms the front part of the rib cage, anchoring the ribs via costal cartilage. This bone helps protect the heart and lungs and provides a stable attachment point for the clavicles at the top. The sternum has three parts: the manubrium at the top, the main body in the middle, and the xiphoid process at the bottom. The collarbones connect to it, while the ribs curve around from the spine to meet the sternum. The other options are a collarbone, the rib bones, and the upper arm bone, which are not the central chest bone.

The central chest bone is the sternum, or breastbone. It sits in the middle of the chest and forms the front part of the rib cage, anchoring the ribs via costal cartilage. This bone helps protect the heart and lungs and provides a stable attachment point for the clavicles at the top. The sternum has three parts: the manubrium at the top, the main body in the middle, and the xiphoid process at the bottom. The collarbones connect to it, while the ribs curve around from the spine to meet the sternum. The other options are a collarbone, the rib bones, and the upper arm bone, which are not the central chest bone.