What is the anatomical term for the breastbone in animals?

The breastbone is anatomically referred to as the sternum in animals. The sternum serves a critical role in providing structural support to the thoracic region, protecting vital organs such as the heart and lungs, and serving as an attachment point for several ribs through cartilage, thereby forming part of the rib cage. This designation applies to various vertebrate species, highlighting its fundamental presence in anatomy.

The clavicle, commonly known as the collarbone, connects the arm to the body and is not involved in the same protective functions as the sternum. The scapula, or shoulder blade, is part of the upper limb's skeletal structure and does not serve as a site for rib attachment. Lastly, the manubrium is actually the upper portion of the sternum, which articulates with the first pair of ribs and the clavicle, but it does not represent the complete term for the breastbone itself. Therefore, the correct answer highlights the overarching term that encompasses the entire breastbone structure across various species.