Sternum (Medical Definition) | Quick Explainer Video

The sternum is a flat bone located in the center of the chest, commonly known as the breastbone. It plays a vital role in protecting the heart, lungs, and major blood vessels located in the chest. The sternum also serves as an anchor point for several muscles involved in breathing and arm movements. In medical terminology, the sternum is crucial for providing structural support and stability to the upper body. In cases of trauma or injury to the chest, the sternum can be affected, leading to potential complications and health issues.